show your work plzzz

The variable used to predict another variable in a regression analysis (usually x) is called the independent variable.

The regression analysis is used to determine the effect on the dependent variable with every one unit change in the independent variable.

The dependent variable is also known as response.

and the independent variable is also known as predictor.

In case of simple linear regression there is only one independent variable and in cases of multiple linear regression there are more than one independent variables.

The general form of simple linear regression is:

\(y=mx+c\)

The general form of multiple linear regression is:

\(y=c+m_1x_1+m_2x_2+...+m_nx_n\)

The dependent variable are usually denoted by the letter "y" and the independent variables are usually denoted by the letter "x".

Therefore, the variable used to predict another variable in a regression analysis (usually x) is called the independent variable.

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The given statement exists true that the general least-squares problem exists if an is a m × n matrix and b is in r m.

The least squares method uses statistics to determine which set of data points fits a set of data points the best by minimizing the sum of the offsets or residuals of the data points from the plotted curve. To predict how dependent variables will behave, least squares regression is used.

The technique that we used to compute a least-squares solution of Ax = b is;

Compute the matrix A T A as well as the vector A T b .

Form the required augmented matrix for the given matrix equation A T Ax = A T b , and then row reduce.

This equation exists always consistent, and as such any solution K x will be a least-squares solution.

By definition, the least squares problem is to estimate xˆ such that |Axˆ − b| ≤ |Ax − b| for all x in IRⁿ.

This means that we are to find a vector x that creates Ax (which exists in the Col(A)) as close to b as possible.

The complete question is:

If a is an m × n matrix and b is in r m, the general least-squares problem is to find an x that makes ax as close as possible to b. true or false?

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Answer:

y=12.50x

Step by step explantion:

Answer:

1

Step-by-step explanation:

r(t) = (cos t, t³)

Take first derivative to find velocity:

v(t) = dr/dt

v(t) = (-sin t, 3t²)

Take derivative again to find acceleration:

a(t) = dv/dt

a(t) = (-cos t, 6t)

At t=0, the acceleration's magnitude is:

a(0) = (-1, 0)

|a(0)| = √((-1)² + 0²)

|a(0)| = 1

Let:

the linear function goes through the points (-4,2) and (4,-4) has a slope of -3/4

and the linear function shown on the graph has a slope of -2/5

the linear function that goes through the points (-4,2) and (4,-4) has the larger slope

Step-by-step explanation:

a)50°

b)75°

c)125°

d)d=40°

Answer:

Step-by-step explanation:

A)180-(60+70)=50

C)180-30=150 150/2=75

B)180-(35+20)=125

D)2d+d+60=180

3d+60=180

3d=120 ; d=40 ; 2d=40×2=80

Answer:

6.25.

Step-by-step explanation:

25 divided by 4 is 6.25.

The correct answer is C) 12 - (y • 2) and 12 - (2 • y),  are Equivalent expressions.

The two expressions that are equivalent are:

C) 12 - (y • 2) and 12 - (2 • y)

The equivalence, let's expand both expressions:

Expression C: 12 - (y • 2)

Expanding the expression, we have: 12 - 2y

Expression D: 12 - (2 • y)

Expanding the expression, we have: 12 - 2y

The order of the terms being subtracted (y • 2 or 2 • y) does not affect the result. Therefore, expressions C) 12 - (y • 2) and 12 - (2 • y) are equivalent.

A) 4 + (3 • y) and (4 + 3) • y

Expanding the expressions, we have: 4 + 3y and 7y

These expressions are not equivalent as they have different terms.

B) (18 ÷ y) + 10 and 10 + (y ÷ 18)

Simplifying the expressions, we have: (18/y) + 10 and 10 + (y/18)

These expressions are not equivalent either as the terms are arranged differently.

D) (10 - 6) ÷ y and 10 - (6 ÷ y)

Simplifying the expressions, we have: 4/y and 10 - (6/y)

These expressions are not equivalent as they have different structures and operations.

Therefore, the correct answer is C) 12 - (y • 2) and 12 - (2 • y), which are equivalent expressions.

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State B with the second-lowest population has the lowest population density. Then the correct option is B.

The process of making choice is by identifying the correct decision, gathering information, and assessing alternative solutions.

The second-lowest density for the states will be given as

\(\rm D_A = \dfrac{1055173}{2677} = 394.16\)

\(\rm D_B = \dfrac{1333089}{36418} = 36.61\)

\(\rm D_C = \dfrac{3596677}{5543} = 648.87\)

\(\rm D_D = \dfrac{6745408}{10555} = 639.07\)

Thus, state B with the second-lowest population has the lowest population density. Then the correct option is B.

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The quiz scores of Rich Borne's Chemistry 101 students are as follows: 24, 31, 47, 29, 31, 16, 48, 41, 50, 54, 37, 22, 54, 38, 7, and 16.the performance of Rich Borne's Chemistry 101 students on the quiz

To analyze this data, we can calculate various descriptive statistics such as the mean, median, mode, range, and standard deviation. The mean (average) score can be obtained by summing up all the scores and dividing by the total number of scores. The median represents the middle value when the scores are arranged in ascending order. The mode refers to the most frequently occurring score. The range is the difference between the highest and lowest scores, indicating the spread of the data. The standard deviation measures the variability or dispersion of the scores around the mean.

By calculating these descriptive statistics, we can gain insights into the performance of Rich Borne's Chemistry 101 students on the quiz and understand the central tendency and variability of their scores.

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Considering the definition of an equation and the way to solve it, the amount of money that the restaurant needs to earn on Sunday is $1431.

An equation is the equality existing between two algebraic expressions connected through the equals sign in which one or more unknown values, called unknowns, appear in addition to certain known data.

The members of an equation are each of the expressions that appear on both sides of the equal sign while the terms of an equation are the addends that form the members of an equation.

The solution of a equation means determining the value that satisfies it. In this way, by changing the unknown to the solution, the equality must be true.

To solve an equation, keep in mind:

Being "x" the amount of money that the restaurant needs to earn on Sunday, and knowing that:

the equation in this case is:

($1445 + $1624 + $x)÷ 3 days= $1500 per day

Solving:

1445 + 1624 + x= 1500×3

3069 + x= 4500

x= 4500 - 3069

x= 1431

Finally, the amount of money that the restaurant needs to earn on Sunday is $1431.

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Answer:

-1/2 is the slope

Step-by-step explanation:

this is because you move 4x on the other side of the equasion making it -4x, you divide by 8 and it makes -1/2x

Answer:

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The  solution of the given system of equations is (8, -1). of the given system of equations is (8, -1).

One method to solve the given system of equations is substitution:

- Solve one of the equations for one of the variables (e.g., x = 9 + y from the second equation).

- Substitute the expression for the variable into the other equation.

- Solve the resulting equation for the remaining variable.

- Substitute the value for the remaining variable back into one of the original equations to find the value of the other variable

Using this method with the given equations

- x - y = 9 -> x = 9 + y

- 3x + 2y = 22 -> 3(9 + y) + 2y = 22

- Simplifying and solving for y: 27 + 5y = 22 -> 5y = -5 -> y = -1

- Substituting y = -1 into x = 9 + y: x = 8

To check this solution, we can substitute these values back into both original equations and confirm that they are true statements.

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Step-by-step explanation:

Use the Distributive Property for the left side of the equation.

\(a( b+ c) = ab + ac\)

Use the Distributive Property:

\(3x + 6 + 8x = 11x + 7\)

\(11x + 6 = 11x + 7\)

x has no solution.

Answer:

b(x) = 4x + 1

Step-by-step explanation:

If x starts from 1, we can give the equation as follows:

b(x) = 4x + 1

Let's check it, for the first one

x = 1, b(x) = 5

for the second, x = 2, b(x) = 4(2)+1 =9

The correct option that indicates how Christa sliced the rectangular pyramid is the second option.

Christa sliced the pyramid perpendicular to its base through two edges.

A rectangular pyramid is a pyramid with a rectangular base and four triangular faces.

The height of the cross section indicates that the location where Christa sliced the shape is lower than the apex of the pyramid.

The trapezoid shape of the cross section of the pyramid indicates that the top and base of the cross section are parallel, indicating that Christa sliced the pyramid parallel to a side of the base of the pyramid, such that it intersects two of the edges of the pyramid

The correct option is therefore the second option;

Christa sliced the pyramid perpendicular to its base through two edges

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Aiden's new hourly wage would be 16.64 per hour.

Solution:

We have been given that Aiden's hourly wage is 16.00 per hour

So, If he gets a 4% raise then his hourly wage will be,

16* (100+ 4) / 100 = 16.64

Therefore, Aiden's new hourly wage will be 16.64 per hour.

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Answer:

Answer is b

Step-by-step explanation:

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Trace sends multiple ICMP packets with progressively higher Time-to-Live until the packet reaches the destination.

Traceroute is a network diagnostic tool that helps identify the path taken by packets from a source to a destination. It achieves this by sending ICMP packets, also known as Internet Control Message Protocol packets, with an increasing value for a specific parameter called the Time-to-Live (TTL). The TTL value determines how many hops, or intermediate network devices, a packet can traverse before being discarded.

Now, the first router receives the ICMP packet and decrements the TTL value by 1. If the TTL becomes zero, the router discards the packet and sends an ICMP "Time Exceeded" message back to the source host. This message indicates that the packet's TTL has expired, and the source host can determine the IP address of the router.

In summary, when we use traceroute, we send multiple ICMP packets with progressively higher TTL values until the packet reaches the destination host. Each router encountered along the way decrements the TTL value, and if it reaches zero, the router generates a "Time Exceeded" message. This process allows us to trace the network path and identify the intermediate devices that the packets traverse.

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If the derivative of the function is positive, the function is increasing; if the derivative is negative, the function is decreasing.

What is a logarithmic function?

A logarithmic function is a type of mathematical function that expresses the power to which a given number (the base) must be raised in order to produce a certain value. It is typically written in the form: \(f(x) = log_b(x),\) where b is the base of the logarithm.

To determine whether a logarithmic function is increasing or decreasing, you can look at the sign of the derivative of the function. If the derivative is positive, the function is increasing; if the derivative is negative, the function is decreasing.

In the case of logarithmic functions, the derivative of \(f(x) = log_b(x)\) is f'(x) = 1/x*ln(b), which is always positive for x > 0, so the logarithmic function is increasing for any base b.

Hence, if the derivative of the function is positive, the function is increasing; if the derivative is negative, the function is decreasing.

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If the derivative of the function is positive, the function is increasing; if the derivative is negative, the function is decreasing.

What is a logarithmic function?

A logarithmic function is a type of mathematical function that expresses the power to which a given number (the base) must be raised in order to produce a certain value. It is typically written in the form: \(f(x)=log_b(x)\). where b is the base of the logarithm.

To determine whether a logarithmic function is increasing or decreasing, you can look at the sign of the derivative of the function. If the derivative is positive, the function is increasing; if the derivative is negative, the function is decreasing.

In the case of logarithmic functions, the derivative of \(f(x)=log_b(x)\). is f'(x) = 1/x*ln(b), which is always positive for x > 0, so the logarithmic function is increasing for any base b.

Hence, if the derivative of the function is positive, the function is increasing; if the derivative is negative, the function is decreasing.

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Answertank cu

Step-by-step explanation:

Answer:

The amount of money would be $1115.45 the zoo makes selling the waste that day.

A Z-score is defined as the fractional representation of data point to the mean using standard deviations.

They charge farmers $5 per pound for the daily feces from the elephants. If an elephant's daily waste production is at or below the 10th percentile for the distribution of waste which is given in the question.

To determine the amount of money would the zoo make selling the waste that day.

P(z ≤ z₀) = 0.1

z₀ = -1.28

⇒z₀ =(x₀ -μ ) / σ

Substitute the values and solve for x₀,

⇒ -1.28 =(x₀ -250 ) / 21

⇒x₀ = (-1.28)×21 - 250

⇒x₀ = 223.09

So the amount of money would be as :

⇒ 223.09 × 5

⇒ 1115.45

Therefore, the amount of money would be $1115.45 the zoo makes selling the waste that day.

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The required value of y for the unit circle is: 2/3

The circle is defined as the locus of a point whose distance from a fixed point is constant i.e center (h, k).

The equation of the circle is given by:

(x - h)² + (y - k)² = r²

where:

h, k is the coordinate of the center of the circle on coordinate plane.

r is the radius of the circle.

Here,

Equation of the unit circle is given as,

x² + y² = 1

Now substitute the given value in the equation,

5/9 + y² = 1

y² = 1 - 5/9

y² = 4/ 9

y = √(4/9)

y = 2/3

Thus, the required value of y for the unit circle is 2/3

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Answer:

Following are the responses to the given question:

Step-by-step explanation:

For point a:

Following are the null and alternative hypotheses:

\(H_0 : \mu_1 \leq \mu_2\\\\H_1 : \mu_1 > \mu_2\)

For point b:

By using the Excel we obtained the output of the 2 sample t-test that is defined in the attached file.  

These point estimately are the difference among the mean for the two populations:

\(\to \mu_{\bar{x_1}-\bar{x_2}} = \mu_{\bar{x_1}}-\mu{\bar{x_2}} ={\bar{x_1}-\bar{x_2}}=573-491=82\)

Answer:

1/115

Step-by-step explanation:

there are 25 players on the team (10+6+9)

there are 6 infielders

They are picking without replacement

6/25 * 5/24 * 4/23

rearranging

6*4/24 *5/25 *1/23

1 *1/5 *1/23

1/115

Answer: 1/115

im not sure if im correct but y could be 6 because if u multiply 4 by 6 its 24 and x is 2 so 2 times 2 is 4 and if we subtract 4 from 24 its 20 plus 6 its equals 26

how to show work:

y=6 x=2

4y - 2x + 6 = 26

4x6=24 - 2x +6 =26

24 - 2x2=4 +6 =26

24 - 4 + 6=26

^^ im not sure if that makes sense but that pretty much sums it up

Answer:

Step-by-step explanation:

The value of a= -1, b= 5, c=1 and d=4.

We have,

line of symmetry at x = 2.

Two vertices of the rectangle are at (-1, 1) and (-1, 4).

Now, seeing from the diagram the four vertices of rectangle is

(-1, 1), (-1, 4), (5, 4) and (5, 1).

We have given a≤ x ≤ b then on comparing

a= -1 and b= 5

and, c ≤ y ≤ d then

c = 1 and d=4

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