PLEASE HELP WILL GIVE BRAINLEST FOR CORRECT ANSWER ONLY !!

Answer:

At a 0.01 significance level, we reject the null hypothesis and conclude that the predicted weight of 65.89 kg is significantly different from the actual weight, which could be anywhere between 53.45 kg and 78.32 kg.

Step-by-step explanation:

Given the linear regression equation:

y = -107 + 1.13x

where x is the height in cm and y is the weight in kg.

To find the predicted value of y for a person with a height of 153 cm, we substitute x = 153 into the regression equation:

y = -107 + 1.13(153)

y = -107 + 172.89

y = 65.89

Therefore, the best predicted weight for an adult male who is 153 cm tall is 65.89 kg.

To check if this predicted value is statistically significant at a 0.01 significance level, we can perform a hypothesis test.

Null Hypothesis: The predicted weight for a person with a height of 153 cm is not significantly different from the actual weight.

Alternative Hypothesis: The predicted weight for a person with a height of 153 cm is significantly different from the actual weight.

We can use a t-test to test this hypothesis, with the test statistic:

t = (y_predicted - y_actual) / (s / sqrt(n))

where y_predicted is the predicted weight, y_actual is the actual weight, s is the standard error of the estimate, and n is the sample size.

The standard error of the estimate can be calculated using:

s = sqrt((1 - r^2) * Sy^2)

where Sy is the sample standard deviation of the y variable.

From the given information, we have:

Sy = 22.77 kg

r = 0.303

Therefore,

s = sqrt((1 - 0.303^2) * 22.77^2) = 20.19 kg

The sample size is n = 100.

Substituting these values into the t-test formula, we get:

t = (65.89 - y_actual) / (20.19 / sqrt(100))

t = (65.89 - y_actual) / 2.019

We want to test at a 0.01 significance level, which corresponds to a two-tailed test with a critical value of t = ±2.576 (from a t-distribution with 98 degrees of freedom, since n-2=98).

If the absolute value of t is greater than 2.576, we reject the null hypothesis and conclude that the predicted weight is significantly different from the actual weight.

Substituting t = 2.576 and t = -2.576 into the t-test formula, we get:

2.576 = (65.89 - y_actual) / 2.019

y_actual = 53.45 kg

-2.576 = (65.89 - y_actual) / 2.019

y_actual = 78.32 kg

Therefore, at a 0.01 significance level, we reject the null hypothesis and conclude that the predicted weight of 65.89 kg is significantly different from the actual weight, which could be anywhere between 53.45 kg and 78.32 kg.

In the given diagram, the measure of angle BAC, m ∠BAC, is 66°

From the question, we are to calculate the measure of the unknown angle

In the given diagram, we have a circle

We are to calculate the measure of angle BAC, m ∠BAC

From one circle theorems, we have that

The angle subtended by an arc at the center of a circle is twice the angle subtended at the circumference

Thus,

From the give circle, we can write that

132° = 2 × m ∠BAC

Divide both sides by 2

132° / 2 = m ∠BAC

66° = m ∠BAC

Therefore,

m ∠BAC = 66°

Hence,

Measure of the angle is 66°

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Therefore, the expression (7-3i) + (x - 2i)² - (4i + 2x²) in the simplest a + bi form is: -2x² - 1 - (4x + 7i)

Linear Equation                   General Form                    Example

Slope intercept form             y = mx + b                            y + 2x = 3

Point–slope form                   y – y1 = m(x – x1 )              y – 3 = 6(x – 2)

General Form                            Ax + By + C = 0               2x + 3y – 6 = 0

Intercept form                        x/a + y/b = 1                 x/2 + y/3 = 1

As a Function f(x) instead of y      f(x) = x + C                         f(x) = x + 3

The Identity Function                      f(x) = x                     f(x) = 3x

Constant Functions                      f(x) = C                       f(x) = 6

Let's start by expanding the square term (x - 2i)² using the formula for (a + b)²:

(x - 2i)² = x² - 4xi + 4i²

Note that i² = -1, so we can simplify this expression to:

(x - 2i)² = x² - 4xi - 4

Substituting this expression and the given values into the original expression, we get:

(7 - 3i) + (x² - 4xi - 4) - (4i + 2x²)

Grouping the real and imaginary terms, we get:

(7 - 4 - 2x²) + (-3i - 4i - 4x) + (x²)

Simplifying the real part, we get:

-2x² - 1

Simplifying the imaginary part, we get:

-7i - 4x

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The volume of the figure is equal 30 cubic feet.

The new volume of the figure is equal 60 cubic feet.

If Molly sells all of the dog beds, she would earn $6.25.

In Mathematics and Geometry, the volume of a rectangular prism can be calculated by using the following formula:

Volume of a rectangular prism = L × W × H

Where:

By substituting the given dimensions (parameters) into the formula for the volume of a rectangular prism, we have;

Volume of figure = 5 × 3 × 2

Volume of figure = 30 cubic feet.

When the height is doubled, we have;

Volume of figure = 5 × 3 × 2(2)

Volume of figure = 60 cubic feet.

For the cost of fabric used, we have:

Cost of fabric used = 2.5 × $4.50

Cost of fabric used = $11.25

Profit = selling price - cost

Profit = $17.50 - $11.25

Profit = $6.25.

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Answer:

can't understand. I don't understand this language. Sorry

Answer:

Step-by-step explanation:

To find the next two terms in the sequence, we need to look for a pattern or rule that generates the sequence.

Looking at the differences between successive terms, we can see that they are increasing by 1, 2, and 3 respectively:

7 - 4 = 3

12 - 7 = 5

19 - 12 = 7

So, the next difference should be 9, and we can add it to the last term in the sequence to get the next term:

19 + 9 = 28

Similarly, we can add the next difference of 11 to get the term after that:

28 + 11 = 39

Therefore, the next two terms in the sequence are 28 and 39.

So, the complete sequence is: 4, 7, 12, 19, 28, 39.

The final image points are: L'(-2,-1), K'(0,-2), J'(2,-3)

It should be noted that to innitiate the first transformation, we must translate three units in a positive y-direction and two units to the left along the x-axis. This is accomplished via adding three to the respective points' measurements on the y-axis and immediately subtracting two from the x-coordinates. Consequently, the consecutive coordinates of J, K, and L become:

J(3,3), K(5,2), L(3,1)

Subsequently, the second alteration requires that we reflect across the x-axis; this can simply be achieved by inverting the y-values of each given point. In conclusion, the modified coordinates of J', K', and L' are now:

J'(3,-3), K'(5,-2), L'(3,-1)

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The z-scores are given as follows:

The z-score of a measure X of a normally distributed variable that has mean represented by [tex]\mu[/tex] and standard deviation represented by [tex]\sigma[/tex] is obtained by the equation presented as follows:

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

Sam's z-score is given as follows:

Z = (185.67 - 186.17)/0.351

Z = -1.42.

Beth's z-score is given as follows:

Z = (111.65 - 111.9)/0.136

Z = -1.84.

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Answer:

B

Step-by-step explanation:

given 2 secants from an external point to the circle, then the product of the external part of one secant and that entire secant is equal to the product of the other secant's external part and that entire secant, that is

3(3 + x) = 4(4 + 5)

3(3 + x) = 4 × 9 = 36 ( divide both sides by 3 )

3 + x = 12 ( subtract 3 from both sides )

x = 9

The area of a regular decagon with a radius of its circumscribed circle equal to 9 is approximately 119.1 to the nearest tenth

To calculate the area of a regular decagon with a radius of its circumscribed circle equal to 9, we need to first find the length of its sides.

For a regular decagon, the relationship between the radius of its circumscribed circle (R) and the length of its sides (a) is:

a = R × sqrt(2 - 2×cos(360/10))

Simplifying this equation, we get:

a = R × sqrt(2 - 2×cos(36))

a ≈ 5.5629

Now that we have the length of the sides, we can use the formula for the area of a regular decagon:

A = (5/4) × a² × (sqrt(5 + 2 × sqrt(5)))

A = (5/4) × (5.5629)² × (sqrt(5 + 2 × sqrt(5)))

A = 154.7293/4 ×

A ≈ 119.0526

Therefore, the area of a regular decagon with a radius of its circumscribed circle equal to 9 is approximately 119.1

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a) The function that represents the volume of the trough in terms of x is  V(x) = 88x - 8x².

b) x = 5.5 inches.

c) The maximum volume is 0 cubic inches.

A function is a mathematical concept that describes a relationship between two sets of values, typically represented as variables. A function maps each element of the first set, called the domain, to a unique element of the second set, called the range. In other words, a function assigns a single output value to each input value.

For example, consider the function f(x) = x². The domain of this function is all real numbers, and the range is all non-negative real numbers. For each value of x, the function f(x) returns the square of that value.

(a) Let x be the distance in inches that the homeowner makes the fold along the two long sides of the rectangular piece of aluminum. Then, the height of the resulting trough will be x inches, and the length of the trough will be 22 - 2x inches (since the fold reduces the length by 2x inches). The width of the trough will still be 4 inches.

The volume of the trough can be found by multiplying its length, width, and height:

V(x) = (22 - 2x) * 4 * x

V(x) = 88x - 8x²

So, the function that represents the volume of the trough in terms of x is V(x) = 88x - 8x².

(b) To find the value of x that maximizes the volume of water that can be carried by the gutter, we need to find the maximum point of the function V(x). We can do this by taking the derivative of V(x) with respect to x, setting it equal to zero, and solving for x:

V'(x) = 88 - 16x

88 - 16x = 0

16x = 88

x = 5.5

Therefore, the value of x that maximizes the volume of water that can be carried by the gutter is x = 5.5 inches.

(c) To find the maximum volume, we substitute x = 5.5 into the function V(x):

V(5.5) = 88(5.5) - 8(5.5)^2

V(5.5) = 242 - 242

V(5.5) = 0

Therefore, the maximum volume of water that can be carried by the gutter is 0 cubic inches.

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The last statement 5 x (4 + 9 ÷ 3) = 3 x (3 + 5) + 11 is true.

All other statements are false.

The PEDMAS rule is a rule in mathematics which tells us how to evaluate an arithmetic expression. By an arithmetic expression we mean expressions like 5 x (6 + 3) ÷ 3 and 14 ÷ (3.5 x 2) + 8.

Each such expression has a value. The PEDMAS rule gives us a sequence of steps, following which we can correctly find the value of an arithmetic expression.

The letters in the word PEDMAS stand for P : Parenthesis,

E : Exponentiation,

D: Division,

M : Multiplication,

A : Addition,

S : Subtraction.

According to this rule we must first

1. Evaluate any parenthesis, that is any expression inside any parenthesis 2. Then any exponential and nth roots.

3. Then evaluate any divisions.

4. Then any multiplication.

5. Then any addition.

6. Finally any subtraction.

This rule is also called the BODMAS rule.

The first two letters stand for Bracket and OF.

In the given expressions:

3 x (4 + 2) − 5 = 3 x 6 - 5 = 18 - 5 = 13,

while 5 x (6 + 3) ÷ 3 = 5 x 9 ÷ 3 = 5 x 3 = 153 x (one-half x 8) ÷ 6 = 3 x 4 ÷ 6 = 2,

while 8 ÷ (one-fourth x 16) + 2 = 8 ÷ 4 + 2 = 2 + 2 = 46 + (2.5 x 5) − 3.5 = 6 + 12.5 -3.5 = 15,

while 14 ÷ (3.5 x 2) + 8 = 14 ÷ 7 + 8 = 2 + 8 = 105 x (4 + 9 ÷ 3) = 5 x (4 + 3) = 5 x 7 = 35,

while 3 x (3 + 5) + 11 = 3 x 8 + 11 = 24 + 11 = 35

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Answer: d eez

Step-by-step explanation:

Answer:

Caleb's regular pay for 40 hours of work is:

$11.15/hour × 40 hours = $446

For the 6 hours of overtime, he is paid time and a half, which is:

$11.15/hour × 1.5 = $16.725/hour

So for the 6 hours of overtime, his pay is:

$16.725/hour × 6 hours = $100.35

His total gross pay for the week is the sum of his regular pay and his overtime pay:

$446 + $100.35 = $546.35

Therefore, Caleb's gross pay for a week in which he works 46 hours is $546.35.

Answer: a = 9

Step-by-step explanation:

The triangle follows the 45-45-90 rule, meaning:

- This is the only isosceles triangle where the Pythagorean theorem can be used.

There are 2 ways to solve this problem...

The easy way is to identify the fact that the sides of a 45-45-90 triangle will be:

– the sides opposite the 45° angles will be 'a'

– the hypotenuse is a•[tex]\sqrt{2[/tex]

The hard way will help visualize this:

Since there's a right angle, you can use the Pythagorean theorem

a² + a² = c² = [tex](9\sqrt{2})^{2}[/tex]

2a² = [tex](9\sqrt{2})^{2}[/tex]

2a² = (9²•2) = 162

a² = 81

a = 9

Solving the equation, the calculated value of the width of the border is 3 feet

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

140 (202x)(16-2x)

Express properly

So, we have

(20 - 2x)(16 -2x) = 140

The above equation can be solved graphically

When the equation (20 - 2x)(16 -2x) = 140 is entered in a graphing tool, we have the solution to be

x = 3 and x =15

The value 15 would make the lengths invalid

So, we have

x = 3

Hence, the width of the border is 3 feet

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Answer:

0.033

Step-by-step explanation:

120+1814x=0

180-134x=0

=0.033

Answer:

i need the points i think the other guy got it right anyway:)

Step-by-step explanation:

The equation of line AB using the coordinates of point A(-2,2) and B(1.4) with the help of formula for equation of line in two point form is 3y=2x+10

or 3y-2x=10 or 3y-2x-10=0

What are coordinates?

The two-dimensional cartesian coordinates are (x, y), while the three-dimensional cartesian coordinates are (x, y, z). The abscissa and ordinate are the terms used to describe ordered pairs in the form of (x,y). Abscissa: The first number in the ordered pair is termed the abscissa.  The abscissa is the value of x in the ordered pair & ordinate is value of y.

We know that equation of line in slope-intercept form is given by:y=mx+b where m denotes slope & b denotes intercept. Also the equation of line can be given in the form of [tex]\frac{Y-Y1}{X-X1} =\frac{Y2-Y1}{X2-X1}[/tex], where (X₁,Y₁) and (X₂,Y₂) are two points through which the line passes.

From the graph it can be seen that the line passes through two points A(-2,2) and B(1,4)

Equation of line  through two points A(-2,2) and B(1,4):

[tex]\frac{Y-Y1}{X-X1} =\frac{Y2-Y1}{X2-X1}[/tex]

Consider point A as  (X1,Y1) and point B as (X2,Y2)

[tex]\frac{Y-2}{X-(-2)}[/tex] = [tex]\frac{4-2}{1-(-2)}[/tex]

[tex]\frac{Y-2}{X+2}[/tex]      =[tex]\frac{4-2}{1+2}[/tex]

[tex]\frac{Y-2}{X+2}[/tex]      =[tex]\frac{2}{3}[/tex]

Y-2       =[tex]\frac{2}{3}[/tex] (X+2)

3(Y-2)    =2(X+2)

3Y-6      =2X + 4

3Y          = 2X + 4 + 6

3Y          = 2X +10

Equation of line  through two points A(-2,2) and B(1,4): 3y=2x+10

or 3y-2x=10 or 3y-2x-10=0

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a. The polyhedron is a triangular prism

b. The polyhedron a pentagonal pyramid

From the question, we are to determine the names of the given polyhedra.

a. The given polyhedra is a three-dimensional geometric shape that consists of two congruent parallel triangles as the base and three rectangular faces that connect the corresponding sides of the triangles.

This shape is known as a triangular prism.

b. The polyhedra is a three-dimensional geometric shape that consists of a pentagonal base and five triangular faces (also known as lateral faces) that meet at a common vertex point above the base. The lateral faces connect the corners of the pentagonal base to the apex, forming five triangular sides that taper upwards to meet at a single point.

This shape is known as a pentagonal pyramid.

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One side of the cube is 2 mm, another side is 3 mm, and the remaining side is 2 mm, then the surface area of the cube is 102 mm².

A cube is a three-dimensional geometric shape that has six square faces of equal size. It is a regular polyhedron, which means that it has congruent regular polygons as its faces, and its edges and vertices are all congruent. A cube can be thought of as a three-dimensional version of a square, as all six faces are square and have equal side lengths.

The cube is a very important shape in mathematics and geometry, as it has many useful properties and applications. For example, it is used in calculating the volume and surface area of three-dimensional objects, and in modeling and visualizing three-dimensional structures in physics, chemistry, and engineering. It is also a common shape in games and puzzles, such as Rubik's Cube.

A cube has six square faces, each of which has the same area. Therefore, to find the surface area of a cube, we can calculate the area of one face and then multiply it by six.

If one side of the cube is 2 mm, then the area of one face is:

2 mm x 2 mm = 4 mm²

If one side of the cube is 3 mm, then the area of another face is:

3 mm x 3 mm = 9 mm²

If the remaining side of the cube is also 2 mm, then the area of the third face is also:

2 mm x 2 mm = 4 mm²

Therefore, the total surface area of the cube is:

6 x (4 mm² + 9 mm² + 4 mm²) = 6 x 17 mm² = 102 mm²

Therefore, if one side of the cube is 2 mm, another side is 3 mm, and the remaining side is 2 mm, then the surface area of the cube is 102 mm².

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We refer to a function as periodic if it repeats across time with a fixed interval.

It is written as f(x) = f(x + p), where p denotes the function's period and is a real number.

Period is defined as the elapsed time between the two instances of the wave.

Here, we have,

A function's period is the amount of time between repetitions of the function. A trigonometric function's period is defined as the length of one complete cycle.

A periodic function is one whose values repeat at regular intervals. For instance, periodic functions include the trigonometric functions, which repeat every 2 pi radians.

Waves, oscillations, and other periodic events are all described by periodic functions in science. A period is the amount of time that separates two waves, whereas a periodic function is a function that repeats its values at regular intervals.

Each set of numbers that are separated by a comma in a number when expressed in standard form is known as a period. It has four periods, making it 5,913,603,800. The place value chart displays each period using a distinct color.

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Where the function f(x) = (9/10)ˣ is given, all the functions are correct with the EXCEPTION of option D.

A. The range of f(x) is y > 0 since any positive number raised to any power is positive.

Therefore, f(x) = (9/10)ˣ >  0.

  B. Since the base of the exponential function, 9/10, is less than 1, f(x) is a decreasing  function. Therefore, it is not always increasing

C. To find the y-  i ntercept of f(x ), we substitute x=0 into the equation:

f(0) = (9/10)⁰ = 1.

Therefore, the y- intercept is ( 0, 1).

D. The domain of f(x) is x ≥ 0, not x > 0. The function is defined for all non  negative real numbers since any non-negative number can be raised to any power.

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The calculated value of the surface area of the cuboid is 188cm²

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

This means that

Height = 168/24 = 7

Length = 24/4 = 6

The surface area of the cuboid is then calculated as

Area = 2 * (lw + wh + lh)

Substitute the known values in the above equation, so, we have the following representation

Area = 2 * (4 * 6 + 4 * 7 + 7 * 6)

Evaluate

Area = 188

Hence, the area is 188cm²

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Strategic decisions occur infrequently and involve long-term decisions.

Decision making is the process of taking decisions from two or more alternatives.

Strategic decision making is one of the important decision making process in an organization. This is one of the best ways to achieve the goals and objectives of an organization.

This is a long term process of decision making since it focus on long term goals.

So this does not occur frequently.

Hence the correct option is (A) infrequently and involve long-term decisions.

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Our negative number means that the government owes you $413.75. We would have to pay the government money if it weren't a negative number.

In order to pay for general government services, goods, and activities, local, state, and federal governments must collect mandated payments or charges from citizens and corporations.

Since ancient times, paying taxes to governments or officials has been a fundamental aspect of civilization.

So, to address this issue, utilize the Single column.

You must first calculate her taxes before deducting the tax credit.

She earns $17,000 in taxable income. She now falls into the 15% category.

The amount owed on the first 9275 dollars that are subject to the tax must first be determined.

.10 * 9275 =  927.50

The remainder of her debt, which is in the 15% range, must then be collected.

.15 * (17000 - 9275) = 1158.75

Add up all of our taxes on the money, then deduct our tax credit of $2500.

(927.50 + 1158.75) -  2500

(2086.25) -  2500 = -413.75

Therefore, our negative number means that the government owes you $413.75. We would have to pay the government money if it weren't a negative number.

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Answer:

B and C are right

Step-by-step explanation:

Total Number of Cats: 58

a is wrong because there are 15 cats in the 6 month to 1 year range and 15/58 is 26% not 35%

b is right because there are 19 cats 1 year or older and 11 cats took more than 1 month to be adopted 11/19 is 58% making it correct

c is right because 38 cats were adopted in a month or less and 38/58 is 66%

d is wrong because 20 cats took longer than a month to adopt and 3 were younger than 3 months and 3/20 = 15% not 12.5%

e is wrong because 18 cats were adopted in 1 to 7 days and 4 were 6 months to 1 year and 4/18 = 22%

The coordinate point of N'is (-2,5)

Answer: one solution x=3

Step-by-step explanation:

this problem is very simple, we need to figure out out what number(x) when multiplied by 2, and then you minus 3 (2x-3)

we need to then multiply this number by 5 to get 15, so 5x3 is what we need to find, so then we need to have the number 6 as 2x, or 3 as x.

so we end up with equation 5(2*3-3) or, 5(6-3), which equals 5*3= 15.