help someone with these two questions


Help Someone With These Two Questions

Answers

Answer 1

The shapes involved in the first figure is a triangle and a trapezium, with an area of 139.5. The shapes involved in the second figure is a triangle and a rectangle, with an area of 22 square units.

How to calculate for the area of the figures

The first figure can be observed to be made up of a triangle and a trapezium. While the second is a triangle and a rectangle, so we shall calculate for the area and sum the results to get the total area of the composite figures as follows:

First figure:

area of the triangle = 1/2 × 9 × 6 = 27 square units

area of the trapezium = 1/2 × (6 + 9) × 15 = 112.5 square units

area of the first figure = 27 + 112.5 = 139.5 square units

Second figure:

area of the triangle = 1/2 × 4 × 2 = 4 square units

area of the rectangle = 9 × 2 = 18 square

area of the second figure = 4 + 18 = 22 square units.

Therefore, the shapes involved in the first figure is a triangle and a trapezium, with an area of 139.5. The shapes involved in the second figure is a triangle and a rectangle, with an area of 22 square units.

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Related Questions

How to solve this? (Ans: X= 5, y=8)​

Answers

In the given equation, [tex]\frac{(a^x)^{2}}{b^{5-x}} \times \frac{b^{y - 4}}{a^{y}} = a^2b^4[/tex], the value of x and y is x = 5 and y = 8

Simultaneous equations: Calculating the value of x and y

From the question, we are to determine the value of x and y in the given equation.

The given equation is

[tex]\frac{(a^x)^{2}}{b^{5-x}} \times \frac{b^{y - 4}}{a^{y}} = a^2b^4[/tex]

To determine the value of x and y, we will simplify the left hand side of the equation and then compare to the right hand side of the equation

The equation can written as

[tex]\frac{(a^x)^2}{a^{y}} \times \frac{b^{y - 4}}{b^{5-x}} = a^2b^4[/tex]

[tex]\frac{(a^{2x})}{a^{y}} \times \frac{b^{y - 4}}{b^{5-x}} = a^2b^4[/tex]

[tex]a^{2x - y}\times b^{y - 4 -(5-x) = a^2b^4[/tex]

Simplify

[tex]a^{2x - y}\times b^{y - 4 -5+x = a^2b^4[/tex]

[tex]a^{2x - y}\times b^{x+y - 9} = a^2b^4[/tex]

By comparison

[tex]2x - y = 2\\x + y - 9 =4[/tex]

Thus,

2x - y = 2

x + y = 4 + 9

and

2x - y = 2

x + y = 13

Solve the equations simultaneously

2x - y = 2

x + y = 13

Adding the two equations, we get:

3x = 15

Dividing both sides by 3, we get:

x = 5

Substituting this value of x into the second equation, we get:

5 + y = 13

Subtracting 5 from both sides, we get:

y = 8

Hence, the solution is:

x = 5, y = 8

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On analyzing a function, Jarome finds that f(a)=b . This means that the graph of f passes through which point?

Answers

Answer: (a, b)

Step-by-step explanation:

the notation f(x) = .... refers that plugging "x" into the function gives us a value which we call "f(x)". so the "plugged in" value is a, and the "spit out
value is b. So in terms of points, (x,y), it will be (a,b)

which of the choices belowm follow an exponetial pattern?select all that apply

Answers

The options  that follow an exponential pattern are:

A.  Division of skin cells every half hour.

C. y = 4 * 3^(x)

How to find the exponential pattern?

An exponential function is defined as one which gradually increases or decreases by a constant rate.

A) Division of skin cells every half hour.

It will determine a exponential pattern since it could be represented in the form of:

y = ab^(x)

where:

a is the initial amount of skin cells and also the number of skin cells  decreases by a constant rate in every half hour.

Thus, option: A is correct.

B) y = x²

It is not a exponential function.

It is a quadratic function.

Thus, option: B is incorrect.

C) y = 4 * 3^(x)

It is a exponential function.

Since it is represented in the form of:

y = ab^(x)

Thus, option: C is correct.

D) From the given table we could see that this represent a linear function and not exponential since the values are increasing by a fixed rate i.e. 3

Thus, option D is incorrect.

E) You are driving at a constant rate of 55 mph.

This situation will represent a linear function or we may say a constant function.

Thus, option E is incorrect.

F) y = 2x³

It represent a cubic function and not exponential.

Hence, option: F is incorrect.

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Write the equations in cylindrical coordinates.
(a) 2x^(2) − 4x + 2y^(2) + z^(2) = 9
(b) z = 5x^(2) − 5y^(2)

Answers

The following parts can be answered by the concept of Cylindrical equation.

a. Cylindrical equation for (a) is: 2r² × cos²(θ) - 4r × cos(θ) + 2r² × sin²(θ) + z² = 9.

b. Cylindrical equation for (b) is: z = 5r² × cos²(θ) - 5r² × sin²(θ).

the given Cartesian equations to cylindrical coordinates.

(a) To convert 2x² − 4x + 2y² + z² = 9 to cylindrical coordinates, we use the following relationships:
x = r × cos(θ)
y = r × sin(θ)
z = z

Substituting these relationships into the equation, we get:
2(r × cos(θ))² - 4(r × cos(θ)) + 2(r × sin(θ))² + z² = 9

Simplifying the equation, we get:
2r² × cos²(θ) - 4r × cos(θ) + 2r² × sin²(θ) + z² = 9

Your cylindrical equation for (a) is: 2r² × cos²(θ) - 4r × cos(θ) + 2r² × sin²(θ) + z² = 9.

(b) To convert z = 5x² − 5y² to cylindrical coordinates, we use the same relationships as before. Substituting them into the equation, we get:
z = 5(r × cos(θ))² - 5(r × sin(θ))²

Simplifying the equation, we get:
z = 5r² × cos²(θ) - 5r² × sin²(θ).

Your cylindrical equation for (b) is: z = 5r² × cos²(θ) - 5r² × sin²(θ).

Therefore,

a. Cylindrical equation for (a) is: 2r² × cos²(θ) - 4r × cos(θ) + 2r² × sin²(θ) + z² = 9.

b. Cylindrical equation for (b) is: z = 5r² × cos²(θ) - 5r² × sin²(θ).

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The following parts can be answered by the concept of Cylindrical equation.

a. Cylindrical equation for (a) is: 2r² × cos²(θ) - 4r × cos(θ) + 2r² × sin²(θ) + z² = 9.

b. Cylindrical equation for (b) is: z = 5r² × cos²(θ) - 5r² × sin²(θ).

the given Cartesian equations to cylindrical coordinates.

(a) To convert 2x² − 4x + 2y² + z² = 9 to cylindrical coordinates, we use the following relationships:
x = r × cos(θ)
y = r × sin(θ)
z = z

Substituting these relationships into the equation, we get:
2(r × cos(θ))² - 4(r × cos(θ)) + 2(r × sin(θ))² + z² = 9

Simplifying the equation, we get:
2r² × cos²(θ) - 4r × cos(θ) + 2r² × sin²(θ) + z² = 9

Your cylindrical equation for (a) is: 2r² × cos²(θ) - 4r × cos(θ) + 2r² × sin²(θ) + z² = 9.

(b) To convert z = 5x² − 5y² to cylindrical coordinates, we use the same relationships as before. Substituting them into the equation, we get:
z = 5(r × cos(θ))² - 5(r × sin(θ))²

Simplifying the equation, we get:
z = 5r² × cos²(θ) - 5r² × sin²(θ).

Your cylindrical equation for (b) is: z = 5r² × cos²(θ) - 5r² × sin²(θ).

Therefore,

a. Cylindrical equation for (a) is: 2r² × cos²(θ) - 4r × cos(θ) + 2r² × sin²(θ) + z² = 9.

b. Cylindrical equation for (b) is: z = 5r² × cos²(θ) - 5r² × sin²(θ).

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Complete the square to re-write the quadratic function in vertex form

Answers

Answer:

to express the quadratic equetion in to factor form

you must use completing squere method

[tex] y= {x}^{2} - 10x - 5[/tex]

y + 5 = x2 - 10x

y + 5 = x2 - 10xy + 5 + 25 = x2 - 10x + 25

y + 5 = x2 - 10xy + 5 + 25 = x2 - 10x + 25y + 30 = (x - 5)2

y + 5 = x2 - 10xy + 5 + 25 = x2 - 10x + 25y + 30 = (x - 5)2 y = ( x - 5)2 - 30 so we get the factor form of the quadratic equetion.

In other way :

if you need to get vertex (5, -30)

or simply by (x, f(x)) which is (-b/2a,f(-b/2a)) form

a=1

a=1b=-10

a=1b=-10c=-5

so when u substitute and you will get (5, f(5))

then for the y-coordinate you substitute 5 in place of x and you will get -30 so vertex = (5, -30)

(a) If A is a 3 × 5 matrix, then the rank of A is at most . Why?(b) If A is a 3 × 5 matrix, then the nullity of A is at most . Why?(c)If A is a 3 × 5 matrix, then the rank of AT is at most . Why?(d) If A is a 3 × 5 matrix, then the nullity of AT is at most . Why?AT= A transpose

Answers

The following parts can be answered by the concept of Matrix.

(a) If A is a 3 × 5 matrix, then the rank of A is at most 3. This is because the rank is the maximum number of linearly independent rows (or columns) in a matrix, and since A has only 3 rows, it cannot have more than 3 linearly independent rows.

(b) If A is a 3 × 5 matrix, then the nullity of A is at most 5. The nullity is the dimension of the null space of A, which is the space of all solutions to the homogeneous system Ax = 0. The number of variables in this system is equal to the number of columns in A, which is 5. Therefore, the nullity cannot exceed 5.

(c) If A is a 3 × 5 matrix, then the rank of AT (A transpose) is at most 3. When transposing A, the number of rows and columns are switched, making AT a 5 × 3 matrix. The rank is still the maximum number of linearly independent rows (or columns), so the rank of AT cannot be more than the number of rows in AT, which is 3.

(d) If A is a 3 × 5 matrix, then the nullity of AT (A transpose) is at most 5. Since AT is a 5 × 3 matrix, the nullity corresponds to the dimension of the null space for the homogeneous system ATx = 0, with 3 variables. By the rank-nullity theorem, the rank plus the nullity of a matrix equals the number of columns in the matrix.

Therefore, the nullity of AT is at most 5, as the number of columns in A is 5.

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1. Which set of side lengths COULD be a RIGHT TRIANGLE?
A. 6, 11, 15
B. 7, 20, 28
C. 9, 40, 41
D. 12, 30, 39

Answers

The set of side lengths that COULD be a RIGHT TRIANGLE is C. 9, 40, 41. This set of side lengths satisfies the Pythagorean Theorem, which states that in a right triangle, the square of the length of the hypotenuse (the longest side) is equal to the sum of the squares of the lengths of the other two sides.

Consider are linearly independent solutions on of a linear homogenous order differential equation.The objective is to determine whether the set of solution is linearly dependent or not.

Answers

To determine whether a set of solutions for a linear homogeneous differential equation is linearly dependent or not, follow these steps:

1. Identify the given solutions: Let's assume the given solutions are y1(t), y2(t), ..., yn(t).

2. Create the Wronskian: The Wronskian is a determinant used to test the linear dependence of solutions. For n solutions, it is an n x n determinant with the ith row containing the ith derivative of the solutions for i = 0, 1, ..., n-1.

3. Compute the Wronskian: Evaluate the determinant by following the standard methods for calculating determinants, such as cofactor expansion or row reduction.

4. Determine linear dependence: If the Wronskian is identically zero (i.e., it is zero for all values of t), then the set of solutions is linearly dependent. If the Wronskian is nonzero for at least one value of t, the set of solutions is linearly independent.

By following these steps, you can determine if the given set of solutions for a linear homogeneous differential equation is linearly dependent or linearly independent.

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Find two consecutive integers such that five times the first is equal to six times the second

Answers

The two consecutive integers are -6 and -5

What are algebraic expressions?

Algebraic expressions are defined as expressions that are composed of coefficients, terms, variables, constants and factors.

Algebraic expressions are also made up of mathematical operations, such as;

AdditionBracketParenthesesSubtractionMultiplicationDivision

From the information given;

Let the consecutive integers

x and x + 1

Then, we get;

5x = 6(x + 1)

expand the bracket

5x = 6x + 6

collect the like terms

-x = 6

x = -6

x + 1 = -6 + 1 = -5

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Assuming the number of views grows according to an EXPONENTIAL model, write a formula for the total number of views (V) the video will have after t days. NOTE: The input variable in the function below is t and the equals sign is already given. There should NOT be any z's or y's in your answer. V(t) = _____

Answers

If the number of views grows according to an exponential model, then the formula for the total number of views (V) the video will have after t days can be expressed as:
V(t) = A * e^(kt)

where A is the initial number of views, e is Euler's number (approximately equal to 2.71828), k is the growth rate constant, and t is the time in days.


In this formula, the exponential function e^(kt) represents the growth factor of the video views over time. The larger the value of k, the faster the video views grow over time. On the other hand, the value of A represents the initial number of views at t=0, and it determines the vertical shift of the exponential function.

Therefore, the formula for the total number of views (V) the video will have after t days, assuming an exponential model, is:

V(t) = A * e^(kt)

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Step 3: Find how many 13 segments fit in 53.

Answers

There are 4 segments of 13 that fit in 53 with a remainder of 1.

To find out how many 13 segments fit in 53, we can use division. To find how many 13 segments fit in 53, we need to divide 53 by 13. We divide 53 by 13, and the quotient will give us the number of 13 segments that fit completely in 53. The remainder will tell us how many units are left over.

53 ÷ 13 = 4 with a remainder of 1

Therefore, there are 4 segments of 13 that fit completely in 53 with 1 unit left over.

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Complete Question:

Find how many 13 segments fit in 53.

help someone need help on this question ​

Answers

The area of the figure is 141.5 units²

What is area of figures?

The space enclosed by the boundary of a plane figure is called its area. The area is measured in units².

The figure can be sub divided into 3 parts,

The first part is a rectangle,

Area of rectangle = l× w

= 6× 8

= 48units²

The second part is also a rectangle

The area of a rectangle = l×w

= 5 × 11

= 55 unit²

The third part is a triangle

area of a triangle = 1/2 bh

= 1/2 × 11 × 7

= 77/2 = 38.5 units²

therefore the area of the figure = 38.5 + 55+48

= 141.5 units²

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The US National Center for Health Statistics estimates mean weights of Americans by age, height, and sex. Forty U.S. women, 5 ft 4 in. tall and age 18-24, are randomly selected and it is found that their average weight is 136.88 lbs. Assuming the population standard deviation of all such weights is 12.0 lb, determine
a. a 95% confidence interval for the mean weight :, of all U.S. women 5 ft 4 in. tall and in the age group 18-24 years.
b. a 70% confidence interval for the mean weight :, of all U.S. women 5 ft 4 in. tall and in the age group 18-24 years.
c. Interpret your answer in part (b).

Answers

(a) 136.88 ± 3.71

(b) 136.88 ± 2.02

(c) The 70% confidence interval is narrower than the 95% confidence interval.

What are the confidence intervals for the weight of U.S. women ?

a. To calculate a 95% confidence interval for the mean weight of all U.S. women who are 5 ft 4 in. tall and in the age group 18-24 years, we can use the formula for a confidence interval for the mean:

Confidence interval = sample mean ± critical value * (standard deviation / square root of sample size)

The critical value for a 95% confidence interval for a normally distributed population is 1.96. Given that the sample mean is 136.88 lbs, the standard deviation is 12.0 lbs, and the sample size is 40, we can plug in these values to calculate the confidence interval:

Confidence interval = 136.88 ± 1.96 * (12.0 / sqrt(40))

Confidence interval = 136.88 ± 3.71

So the 95% confidence interval for the mean weight of all U.S. women who are 5 ft 4 in. tall and in the age group 18-24 years is (133.17 lbs, 140.59 lbs).

b. To calculate a 70% confidence interval, we can use the same formula, but with a different critical value. The critical value for a 70% confidence interval for a normally distributed population is 1.04. Plugging in the given values:

Confidence interval = 136.88 ± 1.04 * (12.0 / sqrt(40))

Confidence interval = 136.88 ± 2.02

So the 70% confidence interval for the mean weight of all U.S. women who are 5 ft 4 in. tall and in the age group 18-24 years is (134.86 lbs, 138.90 lbs).

(c) The interpretation of the 70% confidence interval for the mean weight of U.S. women aged 18-24 and 5 ft 4 in. tall is that it is narrower than the 95% confidence interval, indicating a higher level of certainty (70% confidence) that the true population mean weight falls within the narrower range of (134.86 lbs, 138.90 lbs), compared to the wider range of (133.17 lbs, 140.59 lbs) in the 95% confidence interval. This means that as the confidence level decreases, the confidence interval becomes narrower, providing a more precise estimate of the true population mean. However, a lower confidence level also implies a higher risk of the true population mean falling outside the narrower confidence interval."

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complete the table to show the steps for combining like terms

Answers

The completed table for collecting like terms is found in the attachment and the final answer is -2 + 3x.

What is the Distributive Property, Associative Property, andCommutative Property?

The Distributive Property, Associative Property, and Commutative Property are properties of arithmetic operations that help to simplify mathematical expressions and equations.

Distributive Property:

The Distributive Property states that when we multiply a number by a sum or difference of two or more terms, we can distribute the multiplication over each term inside the parentheses. The formal statement is:

a × (b + c) = (a × b) + (a × c)

a × (b - c) = (a × b) - (a × c)

For example, if we have the expression 3(x + 2), we can distribute the 3 over the sum inside the parentheses to get:

3(x + 2) = 3x + 6

Associative Property:

The Associative Property states that when we add or multiply three or more numbers, we can group them in any way we want, without changing the result. The formal statements are:

(a + b) + c = a + (b + c)

(a × b) × c = a × (b × c)

Commutative Property:

The Commutative Property states that when we add or multiply two numbers, we can switch their order, without changing the result. The formal statements are:

a + b = b + a

a × b = b × a

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Question: N is a Geometric distribution with a mean of 2. a)Find the P [NT] for NNTT = 1, 2, 3, … b)Find the E[NT] c)Find the Var (NT) d)Find the P[NM] ...

Answers

The E[NT] c)Find the Var (NT)  is 3/4.

a) To find P[NNTT = n], we can use the probability mass function (PMF) of the geometric distribution, which is given by:

P[N = k] = (1-p)^(k-1) * p

where p is the probability of success and k is the number of trials until the first success.

In this case, since N has a mean of 2, we know that p = 1/2, since the expected value of a geometric distribution with parameter p is 1/p. Therefore, we can write:

P[NNTT = n] = P[N = n] * P[N = n-1] * P[T] * P[T]

where P[T] is the probability of getting a T, which is 1/2.

Using the PMF of the geometric distribution, we can compute P[N = k] as:

P[N = k] = (1-p)^(k-1) * p

= (1-1/2)^(k-1) * 1/2

= 1/2^k

Therefore, we have:

P[NNTT = 1] = 0 (since we need at least two trials to get NNTT)

P[NNTT = 2] = P[N = 1] * P[N = 1] * P[T] * P[T] = 1/2 * 1/2 * 1/2 * 1/2 = 1/16

P[NNTT = 3] = P[N = 2] * P[N = 1] * P[T] * P[T] = 1/4 * 1/2 * 1/2 * 1/2 = 1/32

P[NNTT = 4] = P[N = 3] * P[N = 2] * P[T] * P[T] = 1/8 * 1/4 * 1/2 * 1/2 = 1/64

and so on.

b) To find E[NT], we can use the formula for the expected value of a geometric distribution, which is 1/p. In this case, since p = 1/2, we have:

E[N] = 1/p = 2

Therefore, E[NT] = E[N] + E[T] = 2 + 1/2 = 5/2.

c) To find Var(NT), we can use the formula for the variance of a geometric distribution, which is (1-p)/p^2. In this case, we have:

Var(N) = (1-p)/p^2 = (1-1/2)/(1/2)^2 = 2

Var(T) = (1/2)*(1/2) = 1/4

Therefore, Var(NT) = Var(N)E[T]^2 + Var(T)E[N]^2 = 2*(1/2)^2 + (1/4)*2^2 = 3/4.

d) To find P[NM], we need to know the value of M, which is not given in the problem statement. Therefore, we cannot compute P[NM] without additional information about M.

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Find the length of the missing side

Answers

Answer:

1. 13 KM. 2. 3.43 KM

Step-by-step explanation:

For these questions, use A^2 + B^2 = C^2, with C being the hypotenuse.

12^2 + 5^2 = c^2

9.5^2 + b^2 = c^2

13 KM,

3.43 KM

PLEASE HELP I'LL GIVE BRAINLIEST PLEASEEE

Answers

The values are:

N = 25*12 = 300 (total number of payments)1% = 0.01 (monthly interest rate)PV = $295,000 (present value or principal)PMT = $1,639.71 (monthly payment)P/Y = 12 (payments per year)C/Y = 12 (compounding periods per year)

How to solve for interest

To calculate the interest saved by the extra payment, we need to compare the total interest paid with and without the extra payment. We can start by calculating the various parameters of the mortgage:

N = 25*12 = 300 (total number of payments)

1% = 0.01 (monthly interest rate)

PV = $295,000 (present value or principal)

PMT = $1,639.71 (monthly payment)

P/Y = 12 (payments per year)

C/Y = 12 (compounding periods per year)

Using the above values, we can calculate the total interest paid over the 25-year period without the extra payment:

interest= (PMT * N) - PV

Total interest paid = ($1,639.71 * 300) - $295,000

Total interest paid = $170,313.65

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true or false and explain why or why not. you are more likely to make type ii error with a t-test than with a comparable z-test.

Answers

The given statement is "You are more likely to make a Type II error with a t-test than with a comparable z-test." can either be true or false because it depends on the sample size and the underlying population distribution.




A t-test is used when the population standard deviation is unknown and is estimated from the sample data.

The t-distribution is used to account for the uncertainty in estimating the population standard deviation. As the sample size increases, the t-distribution approaches the z-distribution (or standard normal distribution).

A z-test is used when the population standard deviation is known or the sample size is large. It uses the standard normal distribution for hypothesis testing.

When the sample size is small and the underlying population distribution is non-normal, a t-test may have a higher chance of making a Type II error compared to a z-test.

However, when the sample size is large or the underlying population is normally distributed, the difference in the likelihood of making a Type II error between the two tests becomes negligible.

In summary, whether you are more likely to make a Type II error with a t-test than with a comparable z-test depends on the sample size and the underlying population distribution.

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-2a^(6)-8a^(3)b-8b^(2) write as a product

Answers

To write an expression as product means write a number as product of other. The product form of expression -2a⁶ - 8a³b - 8 b² is equals to the -2( a⁶ + 4a³b + b² ).

When we multiply two numbers, the resultant is called the product. For example the product of 3and 5" means "3 x 5" or 15. To write an expression as a product of its factors is called factorization. As we know each product of a number is obtained by multiplying it by any other number. We have an expression, -2a⁶ - 8a³b - 8 b². It is a trinomial because it contains three distinct terms. We have to write it as a product form. For this, we have to try to make factor of the numbers. Factors of first term, - 2a⁶ = -2× a× a×a× a× a× a

Factors of second term, -8a³b = -2×-2 × -2 × a×a×a×b

Factors of second term, -8b² = -2×-2 × -2 × b×b

The common factor in terms = - 2. So, pull out the common factor from expression, we can rewrite the expression as -2( a⁶ + 4a³b + b² ). Hence, required value is -2( a⁶ + 4a³b + b² ). For more information about product, visit :

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If a device shows that a place has high humidity but there are not clouds in the sky you can say that is because a. the temperature is at its minimum b. the temperature is too cold c. the temperature is too warm
d. the temperature is cooling off

Answers

Correct answer is c. the temperature is too warm When the temperature is warm, it can cause a higher rate of evaporation, which increases humidity.

Describe why this statement is right?

If a device shows that a place has high humidity but there are no clouds in the sky, you can say that it is because the temperature is too warm. High humidity occurs when the air is holding a lot of moisture, and warm air can hold more moisture than cool air.

As the temperature rises, the air can hold more and more moisture until it reaches a point where it becomes saturated, leading to high humidity. Therefore, if there are no clouds in the sky, it is likely that the temperature is high and causing the high humidity reading.

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what is the range of 2 3 5 4 3 6 4 3. 56 6 5 4

Answers

For the sequence 2 3 5 4 3 6 4 3. 56 6 5 4:

The minimum number is 2

The maximum number is 6

The range is 6 - 2 = 4

So the range of the sequence 2 3 5 4 3 6 4 3. 56 6 5 4 is 4.

(1 point) Are the following statements true or false? 1. The orthogonal projection p of y onto a subspace W can sometimes depend on the orthogonal basis for W used to compute p ? 2. If the columns of an n x p matrix U are orthonormal, then UUTy is the orthogonal projection of y onto the column space of U 3. For each y and each subspace W, the vector y - projw(y) is orthogonal to W. 4. If z is orthogonal to uz and u2 and if W = span(ui, u2), then z must be in W. ? 5. If y is in a subspace W, then the orthogonal projection of y onto W is y itself.

Answers

The first statement is false  2) true 3) true 4) false 5) true

The orthogonal projection p of y onto a subspace W does not depend on the orthogonal basis for W used to compute p, as the projection is unique.

1. False. The orthogonal projection p of y onto a subspace W does not depend on the orthogonal basis for W used to compute p, as the projection is unique.

2. True. If the columns of an n x p matrix U are orthonormal, then UUTy is indeed the orthogonal projection of y onto the column space of U.

3. True. For each y and each subspace W, the vector y - projw(y) is orthogonal to W, as this is the property of orthogonal projections.

4. False. If z is orthogonal to u1 and u2, and W = span(u1, u2), it implies that z is orthogonal to W, not that z must be in W.

5. True. If y is in a subspace W, then the orthogonal projection of y onto W is y itself, as y is already in the subspace and doesn't need to be projected.

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4. Find the length of arc s.
7 cm
0
02 cm.
5 cm

Answers

The length of the arc s as required to be determined in the task content is; 17.5 cm.

What is the length of the arc s?

It follows from the task content that the length of the arc s is to be determined from the given information.

By observation, the angle subtended at the center of the two concentric circles is same for the 2cm and 5 cm radius circles.

Therefore, it follows from proportion that the length of an arc is directly proportional to the radius of the containing circle.

Therefore, the ratio which holds is;

s / 5 = 7 / 2

s = (7 × 5) / 2

s = 17.5 cm.

Ultimately, the length of the arc s is; 17.5 cm.

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what is 3(2/5) Witten in as column vector

Answers

The column vector of the expression is 6/5.

What is a column vector?

A column vector  is an entity or matric with single column of entries.

Column vectors can be added and subtracted from each other, multiplied by a scalar, and transformed by matrices. They are also used to represent systems of linear equations.

The column vector of the expression is calculated as follows;

3 ( 2/5 ) = ( 3 x 2 )/ 5

= 6/5

Thus, by multiplying the fraction by 3 we have successfully converted the expression into a single vector.

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find the area of the shaded region

SHOW YOUR SOLUTION

Answers

Answer:

1. 15.72m²

2. 48dm²

3. 4m²

Step-by-step explanation:

1.

area of unshaded circle=

r=3m. πr^2. (22/7)×3×3= 28.29

area of shaded circle

radius= total radius- unshaded circle radius

r=5m-3m = 2m

Area= πr^2. (22/7)×2×2= 12.57

therefore area= unshaded-shaded

28.29-12.57= 15.72

2.

area of unshaded= area of square = L²

8×8=64

area of shaded= length= 8-2-2= 4

4×4= 16

total area =

64-16= 48

3.

area of triangle= (b×h)/2

(7×6)/2= 42/2= 12

area of rectangle= L×b

4×2= 8

area=12-8= 4

2. Using 3.14 as a value of n, find the approximate volume of each sphere below. Round to
the nearest cubic inch.
a)
4 in
Like
example 1
b)
12 in

Answers

Answer:

a: 268 [tex]in^{3}[/tex]

b: 904 [tex]in^{3}[/tex]

Step-by-step explanation:

Volume of a sphere: [tex]\frac{4}{3} \pi r^3[/tex]

a: [tex]\frac{4}{3} (3.14)(4)^3[/tex] = 267.95

b: r = 12/2 = 6

  [tex]\frac{4}{3} (3.14)(6)^3[/tex] = 904.32

I NEED HELP ON THIS ASAPP!!!!!

Answers

a. The transformation for C > 0, f(x) is h(x) shifted C units to the right.

b. The transformation for C < 0, f(x) is h(x) shifted C units to the left.

What is a transformation?

Transformation is a mathematical operation performed to change the shape, size or orientation of a graph or object.

Since we have the basic function h(x) = 2ˣ, we want to describe the functions. We proceed as folllows.

a. To compare f(x) = h(x - C) to the basic function for C > 0, we see that

f(x) = h(x - C)

[tex]f(x) = 2^{x - C}[/tex]

Now, for C > 0, f(x) is h(x) shifted C units to the right.

So,  f(x) is h(x) shifted C units to the right.

b. To compare f(x) = h(x - C) to the basic function for C > 0, we see that

f(x) = h(x - C)

[tex]f(x) = 2^{x - C}[/tex]

Now, for C < 0,

[tex]f(x) = 2^{x - (-C)}\\f(x) = 2^{x + C}[/tex]

So, for C < 0, f(x) is h(x) shifted C units to the left.

So,  f(x) is h(x) shifted C units to the left.

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what is the geometry of this fold? A. overturned B. inverted C. asymmetric D. symmetric

Answers

The geometry of the fold is asymmetric.

The term "geometry of the fold" refers to the spatial arrangement or shape of a fold in rock layers. In this case, the fold is described as asymmetric. This means that the fold does not exhibit symmetry or balance in its shape, and one limb of the fold is steeper or has a different shape compared to the other limb.

The term "asymmetric" in geology typically refers to folds that have limbs with different angles of inclination or curvature. Therefore, based on the given options, the correct answer is "C. asymmetric."

Therefore, the correct answer is: A. asymmetric

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The geometry of the fold is asymmetric.

The term "geometry of the fold" refers to the spatial arrangement or shape of a fold in rock layers. In this case, the fold is described as asymmetric. This means that the fold does not exhibit symmetry or balance in its shape, and one limb of the fold is steeper or has a different shape compared to the other limb.

The term "asymmetric" in geology typically refers to folds that have limbs with different angles of inclination or curvature. Therefore, based on the given options, the correct answer is "C. asymmetric."

Therefore, the correct answer is: A. asymmetric

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Does either of P = (4, 11, 25) or Q = (-1, 6, 16) lie on the path r = (1 + t, 2 + t^2, t^4)? Both points lie on the path of r(t). Point P lies on the path of r(t). Point Q lies on the path of r(t). Neither point lies on the path of r(t). Find a vector parametrization of line through P = (3, 7, 4) in the direction v = (7, -8, 4) r(t) =

Answers

The correct statement is:

Point P lies on the path of r(t).Point Q does not lie on the path of r(t).

The vector parametrization of the line is:

x = 3 + 7ty = 7 - 8tz = 4 + 4t

How to determine whether points lie on the path?

To determine whether points P = (4, 11, 25) or Q = (-1, 6, 16) lie on the path r = (1 + t, 2 + t², t⁴), we can substitute the values of P and Q into the parametric equations of r(t) and see if they satisfy the equations.

For point P = (4, 11, 25):

Substituting into r(t):

x = 1 + t

y = 2 + t²

z = t⁴

Comparing with P = (4, 11, 25), we see that all the coordinates match. Therefore, point P lies on the path of r(t).

For point Q = (-1, 6, 16):

Substituting into r(t):

x = 1 + t

y = 2 + t²

z = t⁴

Comparing with Q = (-1, 6, 16), we see that none of the coordinates match. Therefore, point Q does not lie on the path of r(t).

So, the correct statement is:

Point P lies on the path of r(t).

Point Q does not lie on the path of r(t).

How to the vector parametrization of line?

To find a vector parametrization of the line through P = (3, 7, 4) in the direction v = (7, -8, 4), we can use the point-direction form of a parametric equation for a line:

r(t) = P + t * v

Substituting the values of P and v, we get:

r(t) = (3, 7, 4) + t * (7, -8, 4)

So the vector parametrization of the line is:

x = 3 + 7t

y = 7 - 8t

z = 4 + 4t

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the sum of two consecutive odd numbers is 56. find the numbers

Answers

Answer:

27  , 29

Step-by-step explanation:

Consecutive odd numbers means that, if the lesser number is denoted by the variable, x, that the given equation is:

[tex](x) + (x + 2) = 56[/tex]

Solve. First, combine like terms, then isolate the variable, x:

[tex]x + x + 2 = 56\\(x + x) + 2 = 56\\2x + 2 = 56[/tex]

Do the opposite of PEMDAS. PEMDAS is the order of operations, and stands for:

Parenthesis

Exponents (& Roots)

Multiplications

Divisions

Additions

Subtractions

~

First, subtract 2 from both sides of the equation:

[tex]2x + 2 = 56\\2x + 2 (-2) = 56 (-2)\\2x = 56 - 2\\2x = 54[/tex]

Next, divide 2 from both sides of the equation:

[tex]2x = 54\\\frac{(2x)}{2} = \frac{(54)}{2}\\ x = \frac{54}{2}\\ x = 27[/tex]

Next, solve for the consecutive odd number. Plug in 27 for x:

[tex](x) = 27\\(x) + 2 = (27) + 2 = 29[/tex]

Check. Add 27 with 29:

[tex]27 + 29 = 56\\56 = 56\\\therefore 27 , 29[/tex]

27 , 29 is your answer.

~

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