Find a vector function that represents the curve of intersection of the paraboloid z=5x^2+2y^2 and the cylinder y=4x^2. Use the variable t for the parameter.

Answers

Answer 1

The vector function that represents the curve of intersection is: r(t) = [x(t), y(t), z(t)] =[tex][t, 4t^2, 5t^2 + 32t^4][/tex]

How to determine the vector function that represents the curve of intersection

To find a vector function that represents the curve of intersection between the paraboloid and the cylinder, we need to express the coordinates (x, y, z) in terms of a parameter t.

Let's start by expressing the cylinder equation in terms of x and y:

y =  [tex]4x^2[/tex]:

We can rewrite this as:

y - 4x^2 = 0

Now, we'll substitute this expression for y in the equation of the paraboloid:

z =[tex]5x^2 + 2y^2[/tex]

Replacing y with [tex]4x^2[/tex]:

[tex]z = 5x^2 + 2(4x^2)^2\\z = 5x^2 + 32x^4[/tex]

Now we have the equations for x and z in terms of t:

x = t

z = 5t^2 + 32t^4

To obtain the y-coordinate, we substitute the x value into the equation of the cylinder:

y =  [tex]4x^2[/tex]:

y =[tex]4t^2[/tex]

Therefore, the vector function that represents the curve of intersection is: r(t) = [x(t), y(t), z(t)] =[tex][t, 4t^2, 5t^2 + 32t^4][/tex]

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Related Questions

Find the cardinal number for the given set.
A = {13,19,25,31,39}
The cardinal number is

Answers

The cardinal number of the set is 5.

The cardinal number of the given set A = {13, 19, 25, 31, 39} is 5.

Cardinal number is the number of elements present in a set, so counting the number of elements of the set will give us the cardinal number of the set.

In this case, we have the set A with 5 elements: 13, 19, 25, 31, and 39.

Thus, the cardinal number of the set is 5.

Hence, the answer is 5.

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15 The Ace Bicycle Shop charges a flat fee of $4, plus $1 per hour, for the hire of a bicycle. The Best
Bicycle Shop charges a flat fee of $8, plus 50 cents per hour. Connie and her friends hire three bicycles
from Ace, and David and his brother hire two bicycles from Best. After how many hours will their hire
costs be the same?

Answers

After 8 hours, the hire costs will be the same for Connie and her friends from Ace and David and his brother from Best.

To find the number of hours when the hire costs will be the same for Connie and her friends from Ace and David and his brother from Best, we need to set up an equation.

Let x represent the number of hours.

For Ace Bicycle Shop, the cost is given by C_Ace[tex](x) = 4 + 1x[/tex], where 4 is the flat fee and 1x represents the hourly charge.

For Best Bicycle Shop, the cost is given by C_Best[tex](x) = 8 + 0.5x[/tex], where 8 is the flat fee and 0.5x represents the hourly charge.

To find the number of hours when the costs are the same, we equate the two equations:

[tex]4 + 1x = 8 + 0.5x[/tex]

Subtracting 0.5x from both sides, we get:

[tex]0.5x = 4[/tex]

Dividing both sides by 0.5, we find:

[tex]x = 8[/tex]

Therefore, after 8 hours, the hire costs will be the same for Connie and her friends from Ace and David and his brother from Best.

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12. A plot of land is used to grow flowers. of the land is allocated for orchids. 2 After the orchids have been planted, of the remaining land is allocated for roses. After orchids and roses have been planted, 0.75 of the remaining land is allocated for tulips. What fraction of the plot of land is not occupied by the flowers?​

Answers

The fraction of the plot of land not occupied by the flowers is 0.0625 or 1/16.

Let's calculate the fraction of the plot of land that is not occupied by the flowers.

Given that initially, 1/4 of the land is allocated for orchids, we have 1 - 1/4 = 3/4 of the land remaining.

After planting the orchids, 2/3 of the remaining land is allocated for roses. Therefore, the fraction of land allocated for roses is (2/3) * (3/4) = 2/4 = 1/2.

Subtracting the land allocated for roses from the remaining land, we have 3/4 - 1/2 = 1/4 of the land remaining.

Finally, 0.75 of the remaining land is allocated for tulips. Therefore, the fraction of land allocated for tulips is 0.75 * (1/4) = 0.1875.

To find the fraction of the plot of land not occupied by the flowers, we subtract the fractions of land allocated for flowers from 1:

1 - (1/4 + 1/2 + 0.1875) = 1 - 0.9375 = 0.0625.

Therefore, the fraction of the plot of land not occupied by the flowers is 0.0625.

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What is the slope of the line that represents this relationship?
Graph the line that represents this relationship.

Answers

The line parallel to the x-axis passing through the points (5,5) and (-5,5) has a slope of 0, indicating a horizontal line with a constant y-coordinate value of 5.

To determine the slope of the line that represents this relationship, we can use the formula for slope, which is given by:

slope = (change in y-coordinates) / (change in x-coordinates)

In this case, we are given two points on the line: (5,5) and (-5,5).

The change in y-coordinates is 5 - 5 = 0, as the y-coordinate remains constant.

The change in x-coordinates is -5 - 5 = -10.

Substituting these values into the slope formula, we get:

slope = 0 / -10 = 0

Therefore, the slope of the line that represents this relationship is 0.

A slope of 0 indicates that the line is parallel to the x-axis. This means that the line has a constant y-coordinate value for all x-coordinate values. In this case, the line passes through the point (5,5) and (-5,5), and it remains at y = 5 for all x-values.

Visually, a line with a slope of 0 would be a horizontal line on the coordinate plane. It does not have an upward or downward slope but remains parallel to the x-axis.

It's important to note that the slope of 0 indicates a relationship where the dependent variable (y) does not change with respect to the independent variable (x). In this case, no matter the value of x, the corresponding y-value remains constant at 5.

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PLEASE HELP V=1/3a^2h solve for A!!

Answers

The formula is `V = 1/3 a²h` and you need to solve for A. You can do this by rearranging the formula so that A is on one side of the equation and everything else is on the other side. Here are the steps you can follow to solve for A:

Step 1: Multiply both sides of the equation by 3 to get rid of the fraction: `3V = a²h`.

Step 2: Divide both sides of the equation by h: `3V/h = a²`.

Step 3: Take the square root of both sides of the equation to solve for a: `sqrt(3V/h) = a`.So the solution for `a` is `sqrt(3V/h)`. You can substitute the given value of `V` and `h` into the equation and simplify it if necessary.

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The foci of an ellipse are at $(2, -3 + \sqrt{5})$ and $(4,-8).$ If the ellipse is tangent to the $x$-axis, then find the length of the major axis.

Answers

The length of the major axis is: 2√{18 - 6√5}

How to solve the equation of an Ellipse?

The foci of an ellipse are usually denoted by the coordinates:

(c, 0) and (-c, 0)

where c is the distance from the center of the ellipse to each focus.

We are given the coordinates of the foci as:

(2, -3 + √5) and (4,-8).

Let us now find the distance between the two foci:

d = √{(2 - 4)² + (-3 + √5 + 8)²}

d = √{4 + (√{5} - 3)² }

d =  √{18 - 6√5}

The ellipse is tangent to the x-axis, and as such the major axis of the ellipse will be parallel to the x-axis. The vertices lie on the x-axis.

The length of the major axis is given by2a,

where a is the distance from the center of the ellipse to either vertex.

The distance between the two vertices is 2a = 2c, which is twice the distance between the center and either focus.

Therefore, the length of the major axis is:

2a = 2d = 2√{18 - 6√5}

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1. What is the standard deviation of the probability distribution below?

Answers

The standard deviation of the probability distribution is approximately 13703.91.

To calculate the standard deviation of a probability distribution, we need to follow these steps:

Calculate the expected value (mean) of the probability distribution. This is done by multiplying each value (x) by its corresponding probability (p(x)) and summing them up.

Expected value (mean) = (10 * 27) + (20 * 28) + (30 * 45) = 270 + 560 + 1350 = 2180.

Calculate the squared deviation for each value. This is done by subtracting the expected value from each value, squaring the result, and then multiplying by the corresponding probability.

Squared deviation for 10: (10 - 2180)^2 * 27 = 212080 * 27 = 5726160.

Squared deviation for 20: (20 - 2180)^2 * 28 = 1998800 * 28 = 55982400.

Squared deviation for 30: (30 - 2180)^2 * 45 = 2815200 * 45 = 126684000.

Calculate the variance of the probability distribution. This is done by summing up the squared deviations.

Variance = (5726160 + 55982400 + 126684000) = 187692560.

Calculate the standard deviation by taking the square root of the variance.

Standard deviation = sqrt(187692560) ≈ 13703.91.

As a result, the probability distribution's standard deviation is around 13703.91.

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2) The mean mathematics SAT score in 2012 was 514 with a standard deviation of 117 ("Total group profile," 2012). Assume the mathematics SAT score is normally distributed. a. State the random variable. b. Find the probability that a person has a mathematics SAT score over 700. c. Find the probability that a person has a mathematics SAT score of less than 400. d. Find the probability that a person has a mathematics SAT score between a 500 and a 650. e. Find the mathematics SAT score that represents the top 1% of all scores.

Answers

The mathematics SAT score representing the top 1% of all scores is approximately 780.

a. The random variable in this case is the mathematics SAT score.

b. To find the probability that a person has a mathematics SAT score over 700, we need to calculate the z-score first.

The z-score is calculated as [tex]\frac{(X - \mu )}{\sigma}[/tex],

where X is the value we're interested in, μ is the mean, and σ is the standard deviation.

In this case, X = 700, μ = 514, σ = 117.

Using the formula, the z-score is [tex]\frac{(700 - 514)}{117 } = 1.59[/tex].

To find the probability associated with this z-score, we can consult a standard normal distribution table or use a calculator.

The probability is approximately 0.0564 or 5.64%.

c. To find the probability that a person has a mathematics SAT score of less than 400, we again calculate the z-score using the same formula.

X = 400, μ = 514, and σ = 117.

The z-score is [tex]\frac{(400 - 514) }{117 } = -0.9744[/tex].

Looking up the probability associated with this z-score, we find approximately 0.1635 or 16.35%.

d. To find the probability that a person has a mathematics SAT score between 500 and 650, we need to calculate the z-scores for both values.

Using the formula, the z-score for 500 is [tex]\frac{(500 - 514)}{117 } = -0.1197[/tex],

and the z-score for 650 is [tex]\frac{(650 - 514)}{117 } = 1.1624[/tex].

We can then find the area under the normal curve between these two z-scores using a standard normal distribution table or calculator.

Let's assume the probability is approximately 0.3967 or 39.67%.

e. To find the mathematics SAT score that represents the top 1% of all scores, we need to find the z-score corresponding to the top 1% of the standard normal distribution.

This z-score is approximately 2.33.

We can then use the z-score formula to calculate the corresponding SAT score.

Rearranging the formula,

[tex]X = (z \times \sigma ) + \mu[/tex],

where X is the SAT score, z is the z-score, μ is the mean, and σ is the standard deviation.

Substituting the values,

[tex]X = (2.33 \times 117) + 514 = 779.61[/tex].

Rounded to the nearest whole number, the mathematics SAT score representing the top 1% of all scores is approximately 780.

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What set of transformations are applied to parallelogram ABCD to create A″B″C″D″?

Parallelogram formed by ordered pairs A at negative 4, 1, B at negative 3, 2, C at negative 1, 2, D at negative 2, 1. Second parallelogram transformed formed by ordered pairs A double prime at 1, negative 4, B double prime at 2, negative 3, C double prime at 2, negative 1, D double prime 1, negative 2.

Answers

The transformations applied to parallelogram ABCD to create A″B″C″D″ are translations

To determine the set of transformations applied to parallelogram ABCD to create A″B″C″D″, we can compare the coordinates of the corresponding vertices.

Let's analyze the transformation for each vertex:

1. A (−4, 1) to A″ (1, −4):

Horizontal translation of 5 units to the right.Vertical translation of 5 units downward.

2. B (−3, 2) to B″ (2, −3):

Horizontal translation of 5 units to the right.Vertical translation of 5 units downward.

3. C (−1, 2) to C″ (2, −1):

Horizontal translation of 3 units to the right.Vertical translation of 3 units downward.

4. D (−2, 1) to D″ (1, −2):

Horizontal translation of 3 units to the right.Vertical translation of 3 units downward.

In summary, the transformations applied to parallelogram ABCD to create A″B″C″D″ are translations. Each vertex is translated horizontally to the right by either 3 or 5 units, and vertically downward by the same amount.

The specific values and directions of these translations determine the new positions of the vertices in the transformed parallelogram.

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A fence with 2 gates in it surrounds a lion enclosure.

Each gate is 4 m wide.
an image

What is the length of the fence around the enclosure not including the gates?

Answers

The length of the fence around the enclosure not including the gates is:2l + 2w + 8 m

To find the length of the fence around the enclosure, we need to first find the perimeter of the rectangle and then subtract the combined length of the two gates from it.

Let's assume the length of the rectangle is 'l' and the width is 'w'.

From the given data, we know that each gate is 4 m wide.

Therefore, the width of the rectangle is:

Width = w + (4 m + 4 m) = w + 8 m

The perimeter of the rectangle is:

P = 2l + 2(w + 8 m) = 2l + 2w + 16 m

Now, we need to subtract the combined length of the two gates from the perimeter:

P - 2 × 4 m = 2l + 2w + 16 m - 8 m = 2l + 2w + 8 m

So, the length of the fence around the enclosure not including the gates is:2l + 2w + 8 m

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A jar of candy is on the counter. Except for 16 pieces, all are red. Except for 16 pieces, all are blue. Except for 16 pieces, all are green. Except for 18 pieces, all are yellow. How many pieces of each color are there? How many pieces of candy are there in all?

Answers

Given a jar of candy that has a certain number of pieces of candy. The given data also tells that a total of 16 pieces are excluded from each color except yellow, where 18 pieces are excluded. The objective is to determine the number of pieces of each color and the total number of candy pieces.Except for 16 pieces, all the candy is red.

It means that there are 16 red candies in the jar that are not included in this count. Let us assume that there are "r" red candies in the jar.Therefore, the total number of red candies is:r + 16.

Except for 16 pieces, all candy is blue.Similarly, we can assume that there are "b" blue candies in the jar.Therefore, the total number of blue candies is:b + 16.

Except for 16 pieces, all candy is green.Likewise, we can assume that there are "g" green candies in the jar.So, the total number of green candies is:g + 16.

Except for 18 pieces, all candy is yellow.We can assume that there are "y" yellow candies in the jar.Therefore, the total number of yellow candies is:y + 18.

The total number of candy pieces in the jar can be obtained by adding all the individual pieces of each color. That is:Total candy pieces

= (r + 16) + (b + 16) + (g + 16) + (y + 18)

Total candy pieces

= r + b + g + y + 66

Now, we will solve this system of equations using the values obtained above

:r + b + g = y + 50y = r + b + g + 18

We need to substitute the second equation in the first equation,

r + b + g = r + b + g + 18 + 50r + b + g = r + b + g + 68

This simplifies to 50 = 68, which is not possible.

Therefore, the given information is inconsistent.

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Please awnser asap I will brainlist

Answers

The number of each type of vehicle the company can buy is:

Commercial van = 100

Small truck = 50

Large truck = l60

How many of each type of vehicle can they buy?

Let

Commercial van = v

Small truck = s

Large truck = l

v = 2s

v + s + l = 310

35000v + 70,000s + 50,000l = 15,000,000

2s + s + l = 310

35000(2s) + 70,000s + 50,000l = 15,000,000

3s + l = 310

140,000s + 50,000l = 15,000,000

Divide by 10,000

3s + l = 310

14s + 5l = 1500

Multiply (1) by 5

15s + 5l = 1550

14s + 5l = 1500

subtract

s = 50

Recall,

v = 2s

v = 2(50)

v = 100

Therefore,

v + s + l = 310

100 + 50 + l = 310

150 + l = 310

l = 310 - 150

l = 160

Hence, the company can buy 100 commercial vehicle, 50 small truck and 160 large truck.

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HELPPPP!!! Ill give 25 points!


Using your equation from step 2d, estimate the GPA of a student who studies for 15 hours a week. Justify your answer.


Y axis is GPA and X axis is hours studied

Answers

The GPA of a student who studies for 15 hours a week is 3.125 GPA.

What is a regression equation?

In Mathematics, the standard form of the equation of a regression line is represented or modeled by the following mathematical expression;

y = bx + c

Where:

b represent the gradient, slope, or rate of change.x and y represent the data points.c represents the y-intercept, vertical intercept, or initial value.

Since the student would study for 15 hours a week, the predicted GPA can be calculated as follows;

y = 0.149x + 0.89

y = 0.149(15) + 0.89

y = 3.125 GPA.

In conclusion, we can logically deduce that a student who studies for 15 hours a week would most likely have a 3.125 GPA.

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Complete Question:

Using your equation from step 2d, estimate the GPA of a student who studies for 15 hours a week. Justify your answer. The equation for the predicted GPA is y=0.149x+0.89

CF AND AH ARE SKEW PERPENDICULAR PARALLEL

Answers

Answer:  Parallel

Reason: The two line segments CF and AH point in the same direction, and they never intersect. Therefore, we consider them parallel.

Skew lines are ones that point in different directions. An example of a pair of skew lines would be AB and DE. Skew lines never intersect, but we don't consider them parallel.

A transformation of rectangle ABCD results in rectangle A’B’C’D
Which transformation maps the pre-image to the image

Answers

In a dilation, the size of the object can be changed while keeping its shape, which is the case in this scenario.

A transformation of rectangle ABCD results in rectangle A’B’C’D. We need to identify which transformation maps the pre-image to the image.Two-dimensional transformations can be classified into four main categories; translations, reflections, rotations, and dilations. We will evaluate each of these to determine which of them maps the pre-image to the image.

TranslationsA translation is a transformation that moves an object in a straight line without changing its shape or orientation. It involves moving an object by a fixed distance in a particular direction. The image is congruent to the pre-image. This transformation does not result in a rectangle ABCD being transformed to A’B’C’D.

It results in a rectangle that has the same size and shape as the pre-image being moved to a different location.ReflectionsA reflection is a transformation that flips an object across a line without changing its shape or orientation. A reflection through a line known as the x-axis, or the y-axis results in a mirror image of the object.

This transformation does not result in a rectangle ABCD being transformed to A’B’C’D.RotationsA rotation is a transformation that turns an object about a fixed point. The fixed point is known as the center of rotation. The angle through which the object is rotated is known as the angle of rotation. A rotation does not change the size or shape of an object, but it changes its orientation. This transformation does not result in a rectangle ABCD being transformed to A’B’C’D.

DilationsA dilation is a transformation that changes the size of an object. The size change is described by a scale factor. The scale factor is greater than 1 for an enlargement and between 0 and 1 for a reduction. The center of dilation is the point about which the object is enlarged or reduced. This transformation does not result in a rectangle ABCD being transformed to A’B’C’D.After evaluating each of the four types of transformations, we can conclude that the transformation that maps the pre-image rectangle ABCD to the image rectangle A’B’C’D is a dilation.

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Identify the conclusion in the conditional statement below.
"If a shape is a quadrilateral, then it is has exactly four sides."
A."If"
B."a shape is quadrilateral"

Answers

The conclusion in the conditional statement "If a shape is a quadrilateral, then it has exactly four sides" is "it has exactly four sides." Option  C

How to determine the conclusion

From the information given, we have that the statement is;

"If a shape is a quadrilateral, then it is has exactly four sides."

The antecedent (if a shape is a quadrilateral) and the consequent (then it has exactly four sides) of the statement are in a conditional connection.

The precise assertion or claim based on this conditional relationship is the conclusion.

In this instance, the conclusion argues that a shape must logically have four sides in order to qualify as a quadrilateral.

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The complete question:

Identify the conclusion in the conditional statement below.

"If a shape is a quadrilateral, then it is has exactly four sides."

A."If it is a quadrilateral, it has four sides"

B."a shape is quadrilateral"

C. "It has exactly four sides"

HELP!!

Next, you will make a scatterplot. Name a point that will be on your scatter plot and describe what it represents.

Answers

A point on the scatter plot is defined as (19, 3), which means that an input of 19 is mapped to an output of 3.

What is the scatter plot?

The scatter plot is built inserting all the points of the table in a graph, which are in the following input-output format:

(Input, Output).

One point on the scatter plot for this problem has the coordinates given as follows:

(19, 3).

Hence the meaning is that an input of 19 is mapped to an output of 3.

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help me please i would appreciate it so so much

Answers

Answer:

w = 120

x = 60

y = 120

z = 60

Step-by-step explanation:

w = 120 (vertically opposite angles)

sum of co interior angles is 180

⇒ w + x = 180 and x + y = 180

w + x = 180

⇒ 120 + x = 180

⇒ x = 180 - 120

⇒  x = 60

x + y = 180

⇒  60 + y = 180

⇒   y = 180 - 60

⇒   y = 120

z = x (corresponding angles)

z = 60

HELP AS SOON AS POSSIBLE

Answers

The resulting triangle after a reflection of triangle NMO over the line x = 2 would be N'(9, 2), M'(6, 1) and O'(7, 3)

What is an equation?

An equation is an expression that shows how numbers and variables are related to each other using mathematical operators.

Reflection is a type of transformation that involves the flipping of a point or figure over a line.

Triangle NMO with vertices at N(-5, 2), M(-2, 1) and O(-3, 3) is reflected over the line x = 2

The resulting triangle would be N'(9, 2), M'(6, 1) and O'(7, 3)

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An author is doing research on an upcoming book on skyscrapers in America. The author gathers data for 10 skyscrapers throughout America and decides to focus on the height data, given in meters, which are reproduced below. Use a TI-83, TI-83 Plus, or TI-84 to calculate the sample standard deviation and the sample variance. Round your answers to one decimal place.

Answers

Sample standard deviation = 51.03

Sample variance = 2604.33

What are the sample standard deviation and sample variance?

Mean (average):

[tex]= (107.5 + 108.2 + 133.6 + 151.4 + 155.8 + 149 + 106.11 + 16.1 + 181 + 165.7 + 130.6 + 126.5 + 109.5 + 139.6 + 139.4 + 140.8 + 143.2 + 132.7 + 171 + 115.7) / 20\\= 1894.28 / 20\\= 94.714[/tex]

Squared differences from the mean:

[tex](107.5 - 94.714)^2 = 161.39\\(108.2 - 94.714)^2 = 182.14\\(133.6 - 94.714)^2 = 1507.99\\(151.4 - 94.714)^2 = 3217.15\\(155.8 - 94.714)^2 = 3750.18\\(149 - 94.714)^2 = 2922.18\\[/tex]

[tex](106.11 - 94.714)^2 = 130.46\\(16.1 - 94.714)^2 = 6659.49\\(181 - 94.714)^2 = 7334.04\\(165.7 - 94.714)^2 = 5041.45\\\\(130.6 - 94.714)^2 = 1281.47\\(126.5 - 94.714)^2 = 1007.35\\(109.5 - 94.714)^2 = 217.75\\(139.6 - 94.714)^2 = 1997.15\\(139.4 - 94.714)^2 = 1990.18\\(140.8 - 94.714)^2 = 2108.42\\(143.2 - 94.714)^2 = 2353.86\\(132.7 - 94.714)^2 = 1425.68\\(171 - 94.714)^2 = 5852.45\\(115.7 - 94.714)^2 = 441.51[/tex]

Sum of squared differences:

= 161.39 + 182.14 + 1507.99 + 3217.15 + 3750.18 + 2922.18 + 130.46 + 6659.49 + 7334.04 + 5041.45 + 1281.47 + 1007.35 + 217.75 + 1997.15 + 1990.18 + 2108.42 + 2353.86 + 1425.68 + 5852.45 + 441.51

= 49482.29.

Sample variance:

s^2 = Sum / (n-1)

= 49482.29 / (20-1)

= 2604.33105263

= 2604.33

Sample standard deviation:

s = sqrt(s^2)

s = sqrt(2604.33)

s = 51.0326366162

s = 51.03

Fulls:

An author is doing research on an upcoming book on skyscrapers in America. The author gathers data for 20 skyscrapers throughout America and decides to focus on the height data, given in meters, which are reproduced below.

Height of skyscraper (meters)

107.5

108.2

133.6

151.4

155.8

149

106.1

116.1

181

165.7

130.6

126.5

109.5

139.6

139.4

140.8

143.2

132.7

171

115.7

Calculate the sample standard deviation and the sample variance.

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22 PLUS 4X OPEN PARENTHESIS 3 MINUS 1 CLOSE PARENTHESIS

Answers

Therefore, 22 + 4x(3 - 1) simplifies to 30.
To simplify the expression 22 + 4x(3 - 1), we can apply the order of operations (PEMDAS/BODMAS) which stands for Parentheses, Exponents, Multiplication and Division (from left to right), and Addition and Subtraction (from left to right).

Let's simplify the expression step by step:

Evaluate the expression within the parentheses:

3 - 1 = 2

Now the expression becomes: 22 + 4x2

Perform the multiplication:

4 x 2 = 8

Now the expression becomes: 22 + 8

Finally, perform the addition:

22 + 8 = 30

Therefore, 22 + 4x(3 - 1) simplifies to 30.


What is the domain of the function graphed below?
A. {x|x# -2, -1, 3}
OB. {x|x# -1}
OC. (x1 x= -2,3}
OD. {x|x# -2,-1, 2, 3)

Answers

The domain of the function graphed in this problem is given as follows:

C. {x | x  ≠ -2, 3}.

How to obtain the domain and range of a function?

The domain of a function is defined as the set containing all the values assumed by the independent variable x of the function, which are also all the input values assumed by the function.The range of a function is defined as the set containing all the values assumed by the dependent variable y of the function, which are also all the output values assumed by the function.

The function is this problem is defined for all real values except x = -2 and x = 3, hence the domain is given as follows:

C. {x | x  ≠ -2, 3}.

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What is the x-intercept y-intercept of 3x-2y=18

Answers

Answer:

x-intercept(s):  (6,0)

y-intercept(s):  (0,−9)

Step-by-step explanation:

To find the x-intercept, substitute in 0 for y and solve for x. To find the y-intercept, substitute in 0 for x and solve for y.

Reuben made a shirt using 7/8yards of red fabric and 1/4yards of yellow fabric. How many more yards of red fabric did Reuben use?

Answers

Answer and Step-by-step explanation:

To find out how many more yards of red fabric Reuben used, we need to subtract the amount of yellow fabric from the amount of red fabric. Since the two fractions have different denominators, we need to find a common denominator before subtracting them. The least common multiple of 8 and 4 is 8, so we can rewrite both fractions with a denominator of 8:

7/8 - 1/4 = 7/8 - (1/4) * (2/2) = 7/8 - 2/8 = (7 - 2)/8 = 5/8

So, Reuben used 5/8 yards more red fabric than yellow fabric.

What is the approximate length of side GF in triangle EFG?

Answers

Answer:

41.93 degrees

Step-by-step explanation:

you have $20 to spend on taxi fare. The ride costs $5 plus $2.50 per kilometer.
write an inequality to determine the distance in kilometers, d, you can ride for $20

Answers

The distance that can be traveled with $20 is equal to or less than 6 km.

Given that the total amount available is $20. Hence, the amount spent on the ride will be equal to or less than $20.

Base fare= $5

Rate per km = $2.5

Expressing the above case in the form of inequality:

  Base fare + (Rate per km x Distance) ≤ Total amount available

  $5 + $2.5d ≤ $20

⇒$2.5d ≤ $15

⇒ d ≤ 6 km where d represents the distance traveled.

Hence the distance that can be traveled with $20 is equal to or less than 6 km.

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Why are the lines y = 5x − 1 and 10x + 2y = 0 perpendicular

Answers

Two lines
g: y = mx+b
h: y = nx+a
Are perpendicular if m = -1/n or if m*n =(-1).
Bothe the statements are equivalent, it might just be easier for you to work with the latter.

Now, in our definition both lines were given with respect to y. Here that is not the case, as the second line is not given with respect to y. So we do some reordering:
10x+2y=0
2y = -10x
y = -5x

Now, as you can see, for the first line m=5, for the second one n = -5, but m*n = 5*(-5)=-25 is not -1 so these lines are not perpendicular.

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The equation of an ellipse is $9x^2 + 16y^2 = 144.$ A line passing through $(0,5)$ and $(1,7)$ also intersects the ellipse. (a) Find the slope of this line. (b) Find the points of intersection.

Answers

The equation of an ellipse is  $80x^2 + 160x + 591 = 0$. with a slope of $2

What is the equation of the ellipse?

In the given equation $9x^2 + 16y^2 = 144$,

The coefficients of $x^2$ and $y^2$ are different, indicating that the ellipse is not a perfect circle.

If the line passing through the points $(0,5)$ and $(1,7)$.We can determine the slope by plugging the points

Slope = (y₂ -y₁)/(x₂-x₁)

Slope = (7-5)/1-0)

Slope = 2/1 = $2

Using the slope intercept form we determine the equation as .

$y = 2x + 5$.

By way of substitution into  the equation of the line into the equation of the ellipse, we have

$9x^2 + 16(2x + 5)^2 = 144$.

Expand to get

$80x^2 + 160x + 591 = 0$.

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HELPPP!!!

Create a residual plot for your data.

Answers

A residual plot is a scatterplot in which the residuals (vertical distances between the predicted and actual values) are plotted against the independent variable. A residual is defined as the difference between the predicted value (based on the regression equation) and the actual value.

Residual plots are a valuable tool for checking the adequacy of the model. It helps us check whether the assumptions of linearity, independence, equal variance, and normality are met or not.

The most basic way to create a residual plot is to plot the residuals against the fitted values. If the points in the residual plot are randomly scattered around the horizontal axis, then the assumption of linearity has been met.

If the points show a pattern, such as a curved line, then the assumption of linearity has been violated.To create a residual plot, follow these steps:

Step 1: Estimate the regression equation and obtain the predicted values (ŷ) and residuals (e). ŷ = b0 + b1X

Step 2: Plot the residuals on the vertical axis and the independent variable (X) on the horizontal axis

.Step 3: Look for patterns in the residual plot. If the points are randomly scattered around the horizontal axis, then the assumptions of linearity, independence, equal variance, and normality are met. If there is a pattern, such as a curved line, then the assumptions have been violated. A residual plot can be used to detect outliers, influential observations, and nonlinearity.

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The function f(x) is shown on the graph.
What is f(0)?
0 only
-6 only
–2, –1, 1, and 3 only
–6, -2,-1, 1 and 3 only

Answers

The function f(x) has five intercepts at -6 only, -2, -1, 1, and 3 only.

The correct answer is D.

The function f(x) has some specific characteristics as shown in the graph.

The graph of f(x) has five intercepts, as can be seen from the graph.

The intercepts of f(x) can be determined by observing where the graph of f(x) crosses the x-axis.

The function f(x) intercepts the x-axis at five different points: -6 only, -2, -1, 1, and 3 only.

At these points, f(x) = 0.
Furthermore, the graph of f(x) is increasing from -∞ to -6, then decreasing from -6 to -2.

The graph of f(x) then increases from -2 to -1, decreases from -1 to 1, increases from 1 to 3, and finally decreases from 3 to +∞.

Hence, we can deduce that the graph of f(x) has a local maximum point at x = -6, a local minimum point at x = -2, and another local minimum point at x = 3.
We can also conclude that f(x) is an odd function, meaning that f(-x) = -f(x).

This can be deduced from the symmetry of the graph about the origin.

Finally, we can see from the graph that the function f(x) is continuous everywhere except at x = -2 and x = 3.

At these points, f(x) is not defined.
The function f(x) has five intercepts at -6 only, -2, -1, 1, and 3 only.

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