A trapezoid has an area of 66 square miles. One base is 8 miles long. The height measures 12 miles. What is the length of the other base?

Answers

Answer 1

Check the picture below.

[tex]\textit{area of a trapezoid}\\\\ A=\cfrac{h(a+b)}{2}~~ \begin{cases} h~~=height\\ a,b=\stackrel{parallel~sides}{bases~\hfill }\\[-0.5em] \hrulefill\\ a=8\\ h=12\\ A=66 \end{cases}\implies 66=\cfrac{12(8+b)}{2} \\\\\\ 66=6(8+b)\implies \cfrac{66}{6}=8+b\implies 11=8+b\implies 3=b[/tex]

A Trapezoid Has An Area Of 66 Square Miles. One Base Is 8 Miles Long. The Height Measures 12 Miles. What

Related Questions

The function v(t) = t^3-10t^2+24t, 0 < t < 8, is the velocity in m/sec of a particle moving along the x-axis.The motion is in the positive direction 0 < t < 4 and 6 < t < 8The motion is in the negative direction 4 < t < 6b) Find the displacement over the given intervalc) Find the distance traveled over the given interval

Answers

The total distance traveled over the interval 0 < t < 8 is: 32/3 + 16/3 + 176/3 = 224/3.

To find the displacement over the given interval, we need to integrate the velocity function:

∫v(t)dt = ∫(t^3 - 10t^2 + 24t)dt = (1/4)t^4 - (10/3)t^3 + 12t^2

Now we can evaluate the displacement over the different intervals:

0 < t < 4:

(1/4)(4)^4 - (10/3)(4)^3 + 12(4)^2 = 32/3

4 < t < 6:

(1/4)(6)^4 - (10/3)(6)^3 + 12(6)^2 - [(1/4)(4)^4 - (10/3)(4)^3 + 12(4)^2]

= -16/3

6 < t < 8:

(1/4)(8)^4 - (10/3)(8)^3 + 12(8)^2 - [(1/4)(6)^4 - (10/3)(6)^3 + 12(6)^2]

= 176/3

Therefore, the displacement over the entire interval 0 < t < 8 is:

32/3 - 16/3 + 176/3 = 64/3

To find the distance traveled over the given interval, we need to break down the motion into the different intervals of direction:

0 < t < 4: The particle is moving in the positive direction, so the distance traveled is the same as the displacement, which is 32/3.

4 < t < 6: The particle is moving in the negative direction, so the distance traveled is the absolute value of the displacement, which is 16/3.

6 < t < 8: The particle is moving in the positive direction, so the distance traveled is the same as the displacement, which is 176/3.

Learn more about displacement here:

https://brainly.com/question/29769926

#SPJ11

The total distance traveled over the interval 0 < t < 8 is: 32/3 + 16/3 + 176/3 = 224/3.

To find the displacement over the given interval, we need to integrate the velocity function:

∫v(t)dt = ∫(t^3 - 10t^2 + 24t)dt = (1/4)t^4 - (10/3)t^3 + 12t^2

Now we can evaluate the displacement over the different intervals:

0 < t < 4:

(1/4)(4)^4 - (10/3)(4)^3 + 12(4)^2 = 32/3

4 < t < 6:

(1/4)(6)^4 - (10/3)(6)^3 + 12(6)^2 - [(1/4)(4)^4 - (10/3)(4)^3 + 12(4)^2]

= -16/3

6 < t < 8:

(1/4)(8)^4 - (10/3)(8)^3 + 12(8)^2 - [(1/4)(6)^4 - (10/3)(6)^3 + 12(6)^2]

= 176/3

Therefore, the displacement over the entire interval 0 < t < 8 is:

32/3 - 16/3 + 176/3 = 64/3

To find the distance traveled over the given interval, we need to break down the motion into the different intervals of direction:

0 < t < 4: The particle is moving in the positive direction, so the distance traveled is the same as the displacement, which is 32/3.

4 < t < 6: The particle is moving in the negative direction, so the distance traveled is the absolute value of the displacement, which is 16/3.

6 < t < 8: The particle is moving in the positive direction, so the distance traveled is the same as the displacement, which is 176/3.

Learn more about displacement here:

https://brainly.com/question/29769926

#SPJ11

Decide whether the statement is true or false. Choose the correct answer below. A. True because (ø) is a subset of Ø. B. False because Ø contains 0 elements so the only element of (Ø) is 0
C. False because Ø contains no elements so nothing can belong to it
D. True because (0) represents a set with one element, Ø

Answers

The correct answer is C. False because Ø contains no elements so nothing can belong to it.

In the area of mathematical logic known as set theory, we study sets and their characteristics. A set is a grouping or collection of objects. These things are frequently referred to as elements or set members. A set is, for instance, a team of cricket players.

We can say that this set is finite because a cricket team can only have 11 players at a time. A collection of English vowels is another illustration of a finite set. However, many sets, including sets of whole numbers, imaginary numbers, real numbers, and natural numbers, among others, have an unlimited number of members.

False because Ø contains no elements so nothing can belong to it.

learn more about set theory

https://brainly.com/question/30764677

#SPJ11

Now you have everything you need to calculate the correlation coefficient r for the variables and y, using this formula :r= 1/n-1 Σ(xi - x) (yi - y) / sz syenter the correct value for r to two decimal places. keep in mind that the correlation coefficient can range in value between –1 and 1.

Answers

The number of data pairs (n), the mean of x (X, the mean of y (y'), the standard deviation of x (s), and the standard deviation of y (sy).

To calculate the correlation coefficient r, you will need the following information: the number of data pairs (n), the mean of x (X), the mean of y (y'), the standard deviation of x (sx), and the standard deviation of y (sy). Use the given formula: r = [1/(n-1)] Σ(xi - X)(yi - y') / (s * sy)

Plug in the values for each variable, calculate the sum, and divide by (n-1). Then, divide the result by the product of the standard deviations (s × sy). Round your final answer to two decimal places. Keep in mind that the correlation coefficient r can range from -1 to 1.

Visit here to learn more about  standard deviation : https://brainly.com/question/29088233

#SPJ11

find the measure of AC

Answers

The measure of the side AC is 23. 69

How to determine the value

Using the Pythagorean theorem, we have that the square of the longest side of a triangle is equal to the sum of the squares of the other two sides of the triangle.

The other two sides of the triangle are the opposite and the adjacent sides.

This is represented as;

x² = y² + z²

Now, substitute the values

25² = 8² + z²

Find the square values

625 = 64 +z²

collect the like terms

z² = 625 - 64

z² = 561

Now,find the square root of both sides

z =23. 69

Learn more about Pythagorean theorem at: https://brainly.com/question/654982

#SPJ1

Type either> or < in the blank.
X
45°
54°
У
X [ ? ] y

Answers

Answer:

x?y      

?=<  

I hope I helped

I need help with this for math

Answers

Answer:

x>4

Step-by-step explanation:

It seems there is only one possible solution to this very problem.

a meter in a taxi calculates the fare using the function f(x)=2.56x+2.40. if x represents length what in miles can a passenger travel for $20

Answers

A passenger can travel approximately 6.875 miles for $20.

What is function?

An input and an output are connected by a function. It functions similarly to a machine with an input and an output. Additionally, the input and output are somehow connected. The traditional format for writing a function is f(x) "f(x) =... "

We want to find the distance (in miles) that a passenger can travel for $20. Let's call this distance d.

Using the given function, we can set up an equation:

20 = 2.56d + 2.40

Solving for d:

2.56d = 20 - 2.40

2.56d = 17.60

d = 6.875

Therefore, a passenger can travel approximately 6.875 miles for $20.

Learn more about function on:

https://brainly.com/question/10439235

#SPJ1

Use the following table to calculate the expected return for the asset.
Return Probability 0.05 0.1
0.1 0.15
0.1 50.5
0.25 0.25
Question 40 options: a) 15.75% b) 16.75% c) 13.75% d) 12.50%

Answers

The answer of the given question based on probability is ,  option (d) 12.50%, which is just slightly lower than the calculated value.

What is Probability?

Probability is measure of likelihood or chance of event occurring. It is number between 0 and 1, where 0 represents impossible event and 1 represents certain event. In other words, the probability of an event happening is the ratio of the number of favorable outcomes to the total number of possible outcomes. Probability theory is  branch of mathematics that deals with study of random phenomena and their analysis, like  flipping of coin or the rolling of dice.

To calculate the expected return for the asset, we need to multiply each return by its corresponding probability and then sum up the results.

Expected return = (0.05 x 0.1) + (0.1 x 0.1) + (0.1 x 0.505) + (0.25 x 0.25) = 0.005 + 0.01 + 0.0505 + 0.0625 = 0.128

Therefore, the expected return for the asset is 12.8%.

The closest option to this answer is (d) 12.50%, which is just slightly lower than the calculated value.

To know more about event visit:

https://brainly.com/question/30874203

#SPJ1

Evaluate the iterated integral \( \int_{0}^{5} \int_{0}^{e^{v}} \sqrt{1+e^{v}} d w d v \).

Answers

The iterated integral is [tex]\frac{2}{3}\left(1+e^5\right)^{\frac{3}{2}}-\frac{2}{3}[/tex].

What is Integrate?

In calculus, integration is the process of finding the integral of a function. The integral is the inverse of the derivative, and it represents the area under a curve between two points. Integration is a fundamental concept in calculus, and it has many applications in various fields such as physics, engineering, economics, and more.

The integral of a function f(x) over an interval [a, b] is denoted by ∫(a to b) f(x) dx, and it is defined as the limit of a sum of areas of rectangles as the width of the rectangles approaches zero. In other words, it is the sum of infinitely many small areas under the curve.

Integrate with respect to w first, treating v as a constant:

[tex]$$\int_0^{e^v} \sqrt{1+e^v} d w=\left[w \sqrt{1+e^v}\right]_0^{e^v}=e^v \sqrt{1+e^v}[/tex]

[tex]$$2. Integrate the result from step 1 with respect to $\mathrm{v}$ :$$[/tex]

[tex]$$\int_0^5 e^v \sqrt{1+e^v} d v=\left[\frac{2}{3}\left(1+e^v\right)^{\frac{3}{2}}\right]_0^5=\frac{2}{3}\left(1+e^5\right)^{\frac{3}{2}}-\frac{2}{3} .$$[/tex]

Therefore, the value of the iterated integral is

To learn more about integral  visit:

https://brainly.com/question/18125359

#SPJ11

Assuming we are transmitting in air: 2.3.1. What is the speed of sound in meters/second? 2.3.2. What is the speed of sound in centimeters/microsecond? 2.3.3. Assuming we are able to calculate our delay time (from transmitted pulse to received pulse), what should our divider be in order to get centimeters to the 'target'?

Answers

the divider for calculating the distance to the target in centimeters would be 171.5 cm. 1.The speed of sound in air at room temperature (20°C) is approximately 343 meters/second.


2. To convert the speed of sound to centimeters/microsecond, we need to convert meters to centimeters and seconds to microseconds:
- 1 meter = 100 centimeters
- 1 second = 1,000,000 microseconds

So, the speed of sound in centimeters/microsecond is:
(343 meters/second) * (100 centimeters/meter) * (1 second/1,000,000 microseconds) = 0.0343 centimeters/microsecond


3. To find the divider for calculating the distance to the target in centimeters, you need to consider the time it takes for the sound to travel to the target and back. Since the distance is doubled (to the target and back), you need to divide the time by 2. Thus, the divider should be:
(speed of sound in cm/μs) * (time in μs) / 2


For example, if your delay time was 100 microseconds, the calculation would be:
(0.0343 cm/μs) * (100 μs) / 2 = 171.5 cm

So, the divider for calculating the distance to the target in centimeters would be 171.5 cm.

to learn more about speed click here :

https://brainly.com/question/13943409

#SPJ11

PLS HELP ME QUICKLY!!!!!!!!!!!!!!!
MARK YOU IF RIGHT BRAINLIST!!!!!!!

Answers

Answer:

y = 2

Step-by-step explanation:

If you look at the highest point on the original and lowest on the reflection, there is a difference of 6. That is, 5 to -1 is a distance of 6. So, the parallelogram must have been reflected across the midpoint. 6/2 = 3, 5-3 =2

Using the alphabet (A, B, C), a random value is assigned to each letter:
A=1
B=2
C=3
D=4

Answers

Based on the given values for each letter in the alphabet, you can determine the value of any combination of letters.

Here's a step-by-step explanation:
1. Identify the letters in the given combination.
2. Find the corresponding value for each letter using the given values (A=1, B=2, C=3, D=4, etc.).
3. Add the values together to get the total value of the combination.

For example, if you want to find the value of the combination "AB":
1. Identify the letters: A and B.
2. Find the values: A=1 and B=2.
3. Add the values together: 1+2=3.

So, the value of the combination "AB" is 3. You can follow these steps for any combination of letters using the provided alphabet values.

To learn more about “the alphabet” refer to the https://brainly.com/question/28059759

#SPJ11

determine whether the sequence converges or diverges. if it converges, find the limit. (if the sequence diverges, enter diverges.) (5n − 1)! (5n 1)!

Answers

The sequence that is defined as (5n - 1)! (5n + 1)! diverges.

To determine whether the sequence converges or diverges and find the limit if it converges, let's analyze the given sequence:

(5n - 1)! (5n + 1)!.

First, let's rewrite the sequence as aₙ = (5n - 1)! (5n + 1)!.

Observe the growth rate of the terms.
Notice that both (5n - 1)! and (5n + 1)! are factorials, which grow rapidly as n increases.

The product of these two factorials will also grow very rapidly.

Based on the rapid growth rate of the terms in the sequence, we can conclude that the sequence diverges.

The sequence (5n - 1)! (5n + 1)! diverges.

Learn more about a sequence:

https://brainly.com/question/6561461

#SPJ11

To position a grid item in the second row and cover the second and third column, apply the style(s): a grid-row: 2; grid-column: 2/3; b. grid-row: 2; grid-column: 2/4 ng b.dly - Poring crow: 2; 2.dily column: 2/3 Cound Global fo d. grid-row: 2: column-span: 2/2, Element rotone

Answers

The correct style to position a grid item in the second row and cover the second and third column depends on the exact layout of the grid.

However, here are four options that could work:

a. Apply the style:

grid-row: 2;

grid-column: 2 / span 2;

This will place the item in the second row and start it from the second column and span it for 2 columns.

b. Apply the style:

grid-row: 2;

grid-column: 2 / 4;

This will place the item in the second row and start it from the second column and end it in the fourth column.

c. Apply the style:

grid-row: 2;

grid-column: 2 / 3;

This will place the item in the second row and start it from the second column and end it in the third column.

d. Apply the style:

grid-row: 2 / 3;

grid-column: 2 / 4;

This will place the item in the second row and span it for 1 row and 2 columns, starting from the second column and ending in the fourth column.

For more such questions on Grid.

https://brainly.com/question/30024373#

#SPJ11

(a) Find orthonormal vectors q1, q2, q3 such that q1, q2 span the column space of (following is a 3*2matrix)
A= 1 1
2 -1
-2 4
(b) Which of the four fundamental subspaces contains q3 ?
(c) Solve Ax = (1,2,7) by least squares.

Answers

q1 = (1/√5, -1/√5, 2/√5), q2 = (2/√53, -1/√53, -4/√53), q3 = (-4/√57, -8/√57, -3/√57); q3 belongs to left nullspace; least squares solution is x = (15/53, 109/53).


(a) Use Gram-Schmidt process on A's columns to find orthogonal vectors u1, u2:
u1 = (1, -1, 2); normalize u1 to get q1 = (1/√5, -1/√5, 2/√5).


u2 = (12, -2, 4) - proj_u1(12, -2, 4) = (10, 0, -4); normalize u2 to get q2 = (2/√53, -1/√53, -4/√53).


(b) q3 must be orthogonal to both q1 and q2. Use cross product: q3 = q1 × q2 = (-4/√57, -8/√57, -3/√57). q3 is

orthogonal to column space of A, so it belongs to left nullspace.


(c) Find least squares solution Ax = (1,2,7): x = A^TA^-1 A^Tb = (15/53, 109/53).

To know more about Gram-Schmidt process click on below link:

https://brainly.com/question/30761089#

#SPJ11

The number of rabbits in Elkgrove doubles every month. There are 20 rabbits present initially. a. Express the number of rabbits as a function of the time t.

Answers

The number of rabbits in Elkgrove doubles every month, starting with 20 rabbits. The function N(t) = 20 * 2^t expresses the number of rabbits after t months.

Let N(t) be the number of rabbits at time t in months.

Initially, there are 20 rabbits, so N(0) = 20.

Since the number of rabbits doubles every month, we have

N(1) = 2 * N(0) = 2 * 20 = 40

N(2) = 2 * N(1) = 2 * 40 = 80

N(3) = 2 * N(2) = 2 * 80 = 160

...

In general, we can express the number of rabbits as a function of time t as

N(t) = 20 * 2^t

where t is measured in months. This is an exponential function, with a base of 2 and an initial value of 20.

To know more about Function:

https://brainly.com/question/2822810

#SPJ4

The ray y = x, x > 0 contains the origin and all points in the coordinate system whose bearing is 45 degree. Determine the equation of a ray consisting of the origin and all points whose bearing is 30 degree. The equation of the ray is y (Simplify your answer including any radicals. Use integers or fractions for any numbers in the expression)

Answers

The slope (m) is equal to the tangent of the angle, so for a 30-degree angle, m = tan(30) = 1/√3. Since the ray contains the origin, the y-intercept (b) is 0. Therefore, the equation of the ray is y = (1/√3)x.

To determine the equation of the ray consisting of the origin and all points whose bearing is 30 degrees, we first need to find the slope of the ray.

The ray y = x, x > 0 contains the origin and all points in the coordinate system whose bearing is 45 degrees. This means that it forms an angle of 45 degrees with the positive x-axis.

Using trigonometry, we can determine that the slope of this ray is tan(45 degrees) = 1.

To find the slope of the ray we're interested in, which forms an angle of 30 degrees with the positive x-axis, we use the same process: tan(30 degrees) = 1/sqrt(3).

Since the ray passes through the origin, its equation will be of the form y = mx, where m is the slope we just calculated.

So the equation of the ray is y = (1/sqrt(3))x.

Learn more about Equation:

brainly.com/question/29538993

#SPJ11

A direct mail company wishes to estimate the proportion of people on a large mailing list that will purchase a product. suppose the true proportion is 0.07. if 220 are sampled, what is the probility that the sample proportion will differ from the population by more than 0.04 Round your answer to four decimal places.

Answers

The probability of a z-score less than -1.48 or greater than 1.48 is approximately 0.1394.

The sample proportion, p-hat, is a random variable that follows a normal distribution with a mean of the true population proportion, p, and a standard deviation of:

[tex]\sqrt{[(p(1-p))/n]}[/tex]

where n is the sample size.

In this case, p = 0.07, n = 220, and the maximum difference allowed between the sample proportion and the population proportion is 0.04. We can write this as:

|p-hat - p| > 0.04

Simplifying this inequality, we get:

p-hat < p - 0.04 or p-hat > p + 0.04

To calculate the probability of either of these events occurring, we need to find the z-scores corresponding to the two cutoff points. Using the formula for the standard error of the sample proportion, we get:

SE = sqrt[(p(1-p))/n] = sqrt[(0.07 * 0.93)/220] = 0.027

The z-score corresponding to a sample proportion that is 0.04 below the population proportion is:

z1 = (p - 0.04 - p) / SE = -1.48

The z-score corresponding to a sample proportion that is 0.04 above the population proportion is:

z2 = (p + 0.04 - p) / SE = 1.48

The probability of either of these events occurring can be found using the standard normal distribution table or calculator. The probability of a z-score less than -1.48 or greater than 1.48 is approximately 0.1394. Therefore, the probability that the sample proportion will differ from the population proportion by more than 0.04 is approximately 0.1394, rounded to four decimal places.

To learn more about probability visit: https://brainly.com/question/30034780

#SPJ11

For the differential equation (x^2-4)^2*y''-2xy'+y=0, the point x=2 is. Slect correct answer a. an ordinary point b. a regular singular point c. an irregular singular point d. a special point e. none of the above

Answers

For the differential equation (x² - 4)² × y"– 2xy' +y = 0, the point x = 0 is option (c) an irregular singular point.

To determine the type of singular point at x = 0 for the given differential equation

(x² - 4)² × y" – 2xy' + y = 0

We need to write the equation in the standard form of a second-order linear differential equation with variable coefficients

y" + p(x)y' + q(x)y = 0

where p(x) and q(x) are functions of x.

Dividing both sides by (x² - 4)², we get

y" – 2x/(x² - 4) y' + y/(x² - 4)² = 0

Comparing this with the standard form, we have

p(x) = -2x/(x² - 4)

and

q(x) = 1/(x² - 4)²

At x = 0, p(x) and q(x) have singularities, so x = 0 is a singular point.

To determine whether the singular point is regular or irregular, we need to calculate the indicial equation.

The indicial equation is obtained by substituting y = x^r into the differential equation and equating coefficients of like powers of x.

Substituting y = x^r into the differential equation, we get

r(r-1) + (-2r) + 1 = 0

Simplifying, we get

r^2 - 3r + 1 = 0

Using the quadratic formula, we get:

r = (3 ± √(5))/2

Since the roots of the indicial equation are not integers, the singular point at x = 0 is an irregular singular point.

Therefore, the correct answer is (c) an irregular singular point.

Learn more about differential equation here

brainly.com/question/14620493

#SPJ4

The given question is incomplete, the complete question is:

For the differential equation (x² - 4)² × y"– 2xy' +y = 0, the point x = 0 is Select the correct answer. a) an ordinary point b) a regular singular point c) an irregular singular point d. a special point e) none of the above

find the sample size needed for a 90onfidence interval to specify the proportion to within ±0.01. assume you don't have any previous research and have no idea about the proportion.

Answers

We need a sample size of at least 677 to estimate the proportion within ±0.01 with 90% confidence

How to calculate the sample size needed for a 90% confidence interval with a margin of error of ±0.01?

We need to use the formula:

n = (z² × p × q) / E²

where:
- n is the sample size
- z is the z-score corresponding to the desired confidence level (90% in this case), which is 1.645
- p is the proportion we are trying to estimate (we don't have any previous research or knowledge about it, so we assume it to be 0.5 for maximum variability)
- q is 1 - p
- E is the margin of error, which is 0.01

Plugging in the values, we get:

n = (1.645² × 0.5 × 0.5) / 0.01²
n = 676.039

So, we need a sample size of at least 677 to estimate the proportion within ±0.01 with 90% confidence, assuming we don't have any previous knowledge about the proportion.

Learn more about sample size.

brainly.com/question/30885988

#SPJ11

2.2 Mr Thorn is concerned about how much electricity he is using and how much he has to pay in electricity costs each month. To help him to keep track of his electricity consumption, the electricity department provided Mr Thorn with an excerpt from his log table, shown below: MR THORN'S WEEKLY ELECTRICITY CONSUMPTION LOG FOR ONE WEEK APPLIANCE AND ELECTRICAL RATING in Watts per Hour (1 000 W = 1 kW) Stove front small plate Oven bake element Geyser Kettle Refrigerator with freezer Lighting: single bulb (60 W) 1900 1 500 40 m AMOUNT OF TIME USED in hours (h) or minutes (m) MON TUE 2 000 24 h 550 24 h 2.2.1 30 m 1 400 5x3 m 3x3m 1,5 h 24 h 2.2.4 24 h WED THU 24 h 5x3 m 24 h 40 m 24 h 2x3 m 24 h FRI 20 m 24 h SAT 24 h 30 m 40 m 24 h SUN 24 h 1h 3x3m 6x3m 6x3m 24 h 24 h 60 6x5h 6x4,5 h 6x 1,5 h 6x5h 6x3,5h 6x7h 6x 12 h Total kWh used 4 6 336 92,4 13,9 Cost of electricity (94,5 c/kWh) R3,78 R5,69 [Source: Eskom Demand Side Management, Generation Communication GFS 0030 Revision 2, (May 2005).] Calculate the electrical rating of the small front plate of the stove in kilowatt (kW). Determine the total kWh Mr Thorn used when boiling his kettle for the week. R317,52 R13,10 2.2.2 Which appliance uses the most electricity? What could he do to reduce his consumption in this area? 2.2.3 Calculate the cost of electricity of the refrigerator with freezer. Give your answer in rands.​

Answers

where the above conditions are given

2.2.1 The electrical rating of the small front plate of the stove is 1.9 kW.2.2.2 The geyser uses the most electricity, with a total of 336 kWh used for the week.2.2.3 The cost of electricity for the refrigerator with freezer is R13.13.2.2.4 Mr Thorn used 0.938 kWh when boiling his kettle for the week.
How did we arrive at thea bove?


2.2.1 To calculate the electrical rating of the small front plate of the stove in kilowatt (kW), we need to divide the wattage by 1000:

1900 W / 1000 = 1.9 kW

From the log table, we can see that the geyser uses the most electricity, with a total of 336 kWh used for the week.

To reduce consumption in this area, Mr Thorn could consider using the geyser less frequently or reducing the temperature setting.

the cost of electricity of the refrigerator with freezer is;

total kWh x cost per kWh:

13.9 kWh x R0.945/kWh = R13.13

the total kWh Mr Thorn used when boiling his kettle for the week, we need to convert the time used in minutes to hours:

40 minutes = 40/60 hours = 0.67 hours

Calculating  the total kWh:

1.4 kW x 0.67 hours = 0.938 kWh

Learn more about electrical rating:
https://brainly.com/question/30504737
#SPJ1

find the critical points for the function f(x,y)=x3 y3−9x2−3y−8

Answers

The critical points for the function f(x, y) are (0, ∛6) and (0, -∛6). To get the critical points for the function f(x, y) = x^3 * y^3 - 9x^2 - 3y - 8, follow these steps:


Step:1. Compute the partial derivatives with respect to x and y:
  - f_x(x, y) = ∂f/∂x = 3x^2 * y^3 - 18x
  - f_y(x, y) = ∂f/∂y = x^3 * 3y^2 - 3
Step:2. Set both partial derivatives equal to 0 to find critical points:
  - 3x^2 * y^3 - 18x = 0
  - x^3 * 3y^2 - 3 = 0
Step:3. Solve the system of equations:
  For the first equation, factor out 3x:
  - 3x(y^3 - 6) = 0
  So, either x = 0 or y^3 - 6 = 0, which gives y = ±∛6.
For the second equation, factor out 3:
  - 3(x^3y^2 - 1) = 0
  So, x^3y^2 - 1 = 0.
Step:4. Combine the information from the two equations:
  - If x = 0, the second equation becomes -1 = 0, which is not possible.
  - If y = ±∛6, the second equation becomes x^3(6 - 1) = 0, which gives x = 0.
So, the critical points for the function f(x, y) are (0, ∛6) and (0, -∛6).

Learn more about critical point here, https://brainly.com/question/7805334

#SPJ11

The critical points for the function f(x, y) are (0, ∛6) and (0, -∛6). To get the critical points for the function f(x, y) = x^3 * y^3 - 9x^2 - 3y - 8, follow these steps:


Step:1. Compute the partial derivatives with respect to x and y:
  - f_x(x, y) = ∂f/∂x = 3x^2 * y^3 - 18x
  - f_y(x, y) = ∂f/∂y = x^3 * 3y^2 - 3
Step:2. Set both partial derivatives equal to 0 to find critical points:
  - 3x^2 * y^3 - 18x = 0
  - x^3 * 3y^2 - 3 = 0
Step:3. Solve the system of equations:
  For the first equation, factor out 3x:
  - 3x(y^3 - 6) = 0
  So, either x = 0 or y^3 - 6 = 0, which gives y = ±∛6.
For the second equation, factor out 3:
  - 3(x^3y^2 - 1) = 0
  So, x^3y^2 - 1 = 0.
Step:4. Combine the information from the two equations:
  - If x = 0, the second equation becomes -1 = 0, which is not possible.
  - If y = ±∛6, the second equation becomes x^3(6 - 1) = 0, which gives x = 0.
So, the critical points for the function f(x, y) are (0, ∛6) and (0, -∛6).

Learn more about critical point here, https://brainly.com/question/7805334

#SPJ11

The area of a dodecagon, or 12-gon, is 140 square inches. Find the apothem of the polygon. Round your answer to the nearest hundredth.

Answers

The apothem of the polygon, give the area of the dodecagon, would be 3. 69 inches .

How to find the apothem ?

The apothem of a polygon can be defined as the radius of its inscribed circle, or as the perpendicular distance between any one of its sides and the center of the shape.

The apothem of a 12 - gon, given the area to be 140 square inches is therefore:

140 = 2 × x ² x tan ( 180 / 2 )

x = 3. 69 inches

In conclusion, the apothem would be 3. 69 inches .

Find out more on apothem at https://brainly.com/question/30626035

#SPJ1

Guys I need help
how can i find an area of a square

Answers

Step-by-step explanation:

Area =  width X height = 7 cm X  7cm = 49 cm^2

Calculate an estimate of the mean length of the insects he found. Give your answer in millimetres (mm). ack to task Length (mm) 0≤x≤ 10 10≤x≤20 20 0​

Answers

Answer:

To calculate the mean length of the insects found, we can use the following formula:

Mean length = (Sum of lengths) / (Number of lengths)

We can calculate the sum of lengths by adding up the lengths of all the insects and dividing by the number of insects:

Sum of lengths = Length (0) + Length (10) + Length (20)

Sum of lengths = 0 mm + 10 mm + 20 mm

Sum of lengths = 30 mm

Number of lengths = 3

Mean length = Sum of lengths / Number of lengths

Mean length = 30 mm / 3

Mean length = 10 mm

Therefore, the mean length of the insects found is 10 mm.

given V (1,4) , W(-4,2),X (0,-8) and Y(x,-3) find x such that VW ⊥ XY

Answers

The solution is: the length VW is 5.

Here, we have,

We are given the length of a line segment VX = 13

We have a point W in the line

The line is divided into two

VX = VW + WX

VX = 13

WX = 8

Hence,

13 = VW + 8

VW = 13 - 8

VW = 5

Therefore, the length VW = 5

To earn more on addition click:

brainly.com/question/29560851

#SPJ1

complete question:

Point W is on line segment V X. Given W X = 8 and VX = 13, determine the length VW

Help!!

010
Consider the graph

Which equation matches the graph?

1. Y= x^5
2.Y= 5x
3.Y= x^1/5
4.Y= 5^x

Answers

Answer:

[tex]y = {5}^{x} [/tex]

#4 is the correct answer.

Answer:

[tex]y = {5}^{x} [/tex]

#4 is the correct answer.

2x - 1

f (x) = ------- =

5

Answers

The calculated value of x is 3 given that f(x) = 2x - 1 and f(x) = 5

Calculating the value of x in the function

From the question, we have the following parameters that can be used in our computation:

f(x) = 2x - 1

f(x) = 5

To find x, we can use the formula of the given function:

f(x) = 2x - 1

And substitute f(x) = 5:

5 = 2x - 1

Add 1 to both sides:

6 = 2x

Divide both sides by 2:

x = 3

Therefore, the value of x is 3.

Read more about function at

https://brainly.com/question/28532394

#SPJ1

Identify the similarities and differences between a square and a rhombus​

Answers

Here are the differences between a square and a rhombus.

Square. Its properties are

(a) All sides are equal.

(b) Opposite sides are equal and parallel.

(c) All angles are equal to 90 degrees.

(d) The diagonals are equal.

(e) Diagonals bisect each other at right angles.

(f) Diagonals bisect the angles.

(g) The intersection of the diagonals is the circumcentre. That is, you can draw a circle with that as centre to pass through the four corners.

(h) The intersection of the diagonals is also the incentre. That is, you can draw a circle with that as centre to touch all the four sides.

(i) Any two adjacent angles add up to 180 degrees.

(j) Each diagonal divides the square into two congruent isosceles right-angled triangles.

(k) The sum of the four exterior angles is 4 right angles.

(l) The sum of the four interior angles is 4 right angles.

(m) Lines joining the mid points of the sides of a square in an order form another square of area half that of the original square.

(n) If through the point of intersection of the two diagonals you draw lines parallel to the sides, you get 4 congruent squares each of whose area will be one-fourth that of the original square.

(o) Join the quarter points of a diagonal to the vertices on either side of the diagonal and you get a rhombus of half the area of the original square.

(p) Revolve a square about one side as the axis of rotation and you get a cylinder whose diameter is twice the height.

(q) Revolve a square about a line joining the midpoints of opposite sides as the axis of rotation and you get a cylinder whose diameter is the same as the height.

(r) Revolve a square about a diagonal as the axis of rotation and you get a double cone attached to the base whose maximum diameter is the same as the height of the double cone.

Rhombus. Its properties are

(a) All sides are equal.

(b) Opposite sides are parallel.

(c) Opposite angles are equal.

(d) Diagonals bisect each other at right angles.

(e) Diagonals bisect the angles.

(f) Any two adjacent angles add up to 180 degrees.

(g) The sum of the four exterior angles is 4 right angles.

(h) The sum of the four interior angles is 4 right angles.

(i) The two diagonals form four congruent right angled triangles.

(j) Join the mid-points of the sides in order and you get a rectangle.

(k) Join the mid-points of the half the diagonals in order and you get a rhombus.

(l) The distance of the point of intersection of the two diagonals to the mid point of the sides will be the radius of the circumscribing of each of the 4 right-angled triangles.

(m) The area of the rhombus is a product of the lengths of the 2 diagonals divided by 2.

(n) The lines joining the midpoints of the 4 sides in order, will form a rectangle whose length and width will be half that of the main diagonals. The area of this rectangle will be one-half that of the rhombus.

(o) If through the point of intersection of the two diagonals you draw lines parallel to the sides, you get 4 congruent rhombus each of whose area will be one-fourth that of the original rhombus.

(p) There can be no circumscribing circle around a rhombus.

(q) There can be no inscribed circle within a rhombus.

(r) Two congruent equilateral triangles are formed if the shorter diagonal is equal to one of the sides.

(s) Two congruent isosceles acute triangles are formed when cut along the shorter diagonal.

(t) Two congruent isosceles obtuse triangles are formed when cut along the longer diagonal.

(u) Four congruent RATs are formed when cut along both the diagonals. These RATs cannot be isosceles RATs.

(v) Join the quarter points of both the diagonals and you get a similar rhombus of 1/4th area as the parent rhombus.

(w) Revolve a rhombus about any side as the axis of rotation and you get a cylindrical surface with a convex cone at one end a concave cone at the other end. Their slant heights will be the same as the cylindrical sides of the solid.

(x) Revolve a rhombus about a line joining the midpoints of opposite sides as the axis of rotation and you get a cylindrical surface with concave cones at the both ends.

(y) Revolve a rhombus about the longer diagonal as the axis of rotation and you get a solid with two cones attached at their bases. The maximum diameter of the solid will be the same as the shorter diagonal of the rhombus.

(z) Revolve a rhombus about the shorter diagonal as the axis of rotation and you get a solid with two cones attached at their bases. The maximum diameter of the solid will be the same as the longer diagonal of the rhombus.

find the equation for the plane through p0(−7,5,2) perpendicular to the following line. x=−7 t, y=5−4t, z=−3t, −[infinity]

Answers

The equation of the plane through p0(−7,5,2) perpendicular to the following line is


12c/7(x+7)-9c/7(y-5)+13b/7(z-2)=0

To find the equation for the plane through p0(−7,5,2) perpendicular to the line x=−7 t, y=5−4t, z=−3t, −[infinity], we need to first find the direction vector of the line.

The direction vector of the line is <−7, −4, −3>, which is the coefficients of t in the x, y, and z components respectively.

Now, we know that the normal vector of the plane is perpendicular to the direction vector of the line. So, we can use the cross product of the normal vector and the direction vector to find the equation of the plane.

Let n be the normal vector of the plane. We know that n is perpendicular to <−7, −4, −3>, so we can take the cross product of these two vectors:

n = <−7, −4, −3> ×

To find a, b, and c, we can use the fact that n is perpendicular to the line and passes through p0(−7,5,2). So, we have:

n · <−7, 5, 2> = 0

Substituting n and expanding the dot product, we get:

−7a − 4b − 3c = 0

Solving for a in terms of b and c, we get:

a = (−4b − 3c)/7

Substituting this into the cross-product formula, we get:

n = <−7, −4, −3> × <(−4b − 3c)/7, b, c>

Expanding the cross-product, we get:

n = <12c/7, −9c/7, 13b/7>

Finally, the equation of the plane can be written as:

12c/7(x+7)-9c/7(y-5)+13b/7(z-2)=0

where b and c are free parameters that determine the orientation of the plane.

Learn more about the equation of plane:https://brainly.com/question/10524369

#SPJ11

Other Questions
Preferred stock is a hybrid security, because it has some characteristics typical of debt and others typical of equity. The following table lists various characteristics of preferred stock. Determine which of these characteritics is consistent with debt and which is consistent with equity.CharacteristicsDebtEquityUsually has no voting rights.Yes or NoYes or NoNo tax adjustments are made when calculating the cost of preferred stock.Yes or NoYes or NoAt the present time, Ferro Co. does not have any preferred stock outstanding but is looking to include preferred stock in its capital structure in the future. Ferro has found some institutional investors that are willing to purchase its preferred stock issue provided that it pays a perpetual divident of $11 per share. If the investors pay $95.70 per shar, Ferro's cost of preferred stock will be ___________a. 12.1%b. 13.2%c. 13.8%d. 11.5% Let g and h be the functions defined by g(x)=?2x^2+4x+1 and h(x)=1/2x^2 - x + 11/2. If f is a function that satisfies g(x)?f(x)?h(x) for all x, what is limx?1f(x) ?. 3B. 4 C. 5 D. The limit cannot be determined from the information given Find F(s). (5t (5t + 1) U(t 1)} F(s) = throughout history there have been three general theories for the proposed causes of mental illness: 1) somatogenic, 2) psychogenic, and 3) . group of answer choices cathartic humoristic supernatural relativistic a free electron in a uniform magnetic field of 3.84 t flips its orientation from parallel to the magnetic field to anti-parallel. how much energy is associated with the change? suppose germination periods, in days, for grass seed are normally distributed and have a known population standard deviation of 5 days and an unknown population mean. a random sample of 19 types of grass seed is taken and gives a sample mean of 36 days. use a calculator to find the confidence interval for the population mean with a 99% confidence level. round your answer to two decimal places. provide your answer below: What is the mass in grams of NaCN in 120.0 mL of a 2.40 x 10-5 M solution? STARTING AMOUNT ADD FACTOR ANSWER RESET | 6.022 x 1023 2.88 x 10-3 M NaCN 1000 0.141 g NaCN/mol 49.01 mol NaCN 1.01 x 10-4 g NaCN 120.0 ml 0.001 35.00 1.41 x 10-4 2.40 x 10-5 The following selected accounts appear in the adjusted trial balance for Deane Company. Identify the accounts that would be included in a post-closing trial balance.(a) Accumulated Depreciation.(b) Depreciation Expense.(c) Retained Earnings (ending).(d) Dividends.(e) Service Revenue(f) Supplies(g) Accounts Payable. in a ________ strategy, customer orders drive(s) manufacturing and distribution operations.a. supply Chainb. Salesc. producingd. inventory When the state for a dispatcher object moves to signaled, the Windows kernel A) moves all threads waiting on that object to ready state if the dispatcher object is a mutex object B) moves a fixed number of threads (possibly greater than one) waiting on that object to ready state if the dispatcher object is a mutex object. C) moves all threads waiting on that object to ready state if the dispatcher object is an event object. D) moves a fixed number of threads (possibly greater than one) waiting on that object to ready state if the dispatcher object is an event object. The central atom in ____ violates the octet rule.Question 16 options:a) PF5b) PCl3c) Cl2d) SF2e) FCN consider a case where the wave speed decreases from c to 0.86 c . by what factor does the wavelength change? Use series to approximate the definite integral I to within the indicated accuracy 0.4 1 + x3 dx lerrorl < 5 10-6) 0 I - 0.393717029 which is the question or theme homer explores in the most depth with his characterization of odysseus In process 2, material G is added when a batch is 60% complete. Ending work-in-process units, which are 50% complete, would be included in the computation of equivalent units for: (CPA adapted)Conversion CostsMaterial GA.YesNoB.NoYesC.NoNoD.YesYesMultiple ChoiceOption A.Option B.Option C.Option D. consider the two-state continuous-time markov chain. starting in state 0, find cov[x(s),x(t)]. Question 36 1 pts The emergence of African elites and their formal education inadvertently created nationalists who were prepared to challenge European rule. True False A voice signal (300 to 3300 Hz) is digitized such that the quantization distortion + 0.1% of the peak-to-peak signal voltage. Assume a sampling rate of 8000 sam- ples/s and a multilevel PAM waveform with M 32 levels. Find the theoretical mini- mum system bandwidth that avoids ISI. Bailey Delivery Company, Inc., was organized in 2018 in Wisconsin. The following transactions occurred during the year:Received cash from investors in exchange for 12,000 shares of stock (par value of $1.00 per share) with a market value of $6 per share.Purchased land in Wisconsin for $23,000, signing a one-year note (ignore interest).Bought two used delivery trucks for operating purposes at the start of the year at a cost of $14,000 each; paid $3,000 cash and signed a note due in three years for the rest (ignore interest).Paid $2,300 cash to a truck repair shop for a new motor for one of the trucks. (Increase the account you used to record the purchase of the trucks because the productive life of the truck has been improved)Sold one-fourth of the land for $5,750 to Pablo Development Corporation, which signed a six-month note.Stockholder Helen Bailey paid $27,600 cash for a vacant lot (land) in Canada for her personal use.prepare a classified balance sheet for bailey delivery company at december 31, 2018. Free trade can cause ________ workers to lose their jobs due to increased imports or production shifts to low-wage global markets.