The following sample observations were randomly selected. a. Determine the regression equation. (Negative value should be indicated by a minus sign. Round your answers to 3 decimal places.) Y = -19.120 + -1.743 X b. Determine the value of x when X is 7, (Round your answer to 4 decimal places.) -31.321

Answers

Answer 1

The value of Y when X is 7 is -31.321, rounded to 4 decimal places.

What is the regression equation and the value of Y when X is 7?

The regression equation is a mathematical formula that describes the relationship between two variables, typically denoted as X and Y. To calculate the regression equation, we need a sample of observations for both X and Y. Once we have the sample, we can use statistical software or equations to estimate the coefficients of the equation.

In this case, we are given the regression equation as Y = -19.120 - 1.743X, rounded to 3 decimal places. This equation suggests that there is a negative relationship between X and Y, with Y decreasing by 1.743 units for every one-unit increase in X.

To determine the value of Y when X is 7, we simply substitute X = 7 into the equation and solve for Y:

Y = -19.120 - 1.743(7) = -31.321

Therefore, the value of Y when X is 7 is -31.321, rounded to 4 decimal places.

It is important to note that the regression equation is an estimate of the true relationship between X and Y, based on the sample of observations. The accuracy of the estimate depends on the size and representativeness of the sample, as well as the assumptions of the regression model.

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Related Questions

Write the expanded form of the expression.
y(0.25 +5)
y(0.25 + 5) =

Answers

(y * .25) + (y * 5)


hope this helps

The expanded form of the expression y(0.25 +5) is 0.25y + 5y.

What are GCF and distributive property?

The GCF of two or more than two numbers is the highest number that divides the given two numbers completely.

We also know that distributive property states a(b + c) = ab + ac.

Expanded form or Distributive properties are the same in mathematics.

Given, An expression y(0.25 + 5).

So, applying  distributive property a(b + c) = ab + ac to y(0.25 + 5) we have

0.25y + 5y.

= 5.25y.

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Find the equation of the line which passes through (0,8) and (1,12)

Answers

Answer:y =4x + 8

Step-by-step explanation:

X-0/0-1 = y-8/8-12

Or,-4x = -y +8

So, y-4x = 8

At a certain store a half gallon jug of milk cost 2.95 and a gallon jug of milk costs 5.95. Which milk has cheaper price?

Answers

Answer:

The first milk

Step-by-step explanation:

2.95 × 2 = 5.90

The first milk has cheaper price.

PROBLEM SOLVING A math club is having a bake sale. Find the area of the bake sale sign
TT IS
SWEET!
412ft
Math Club Baka Ina this Saturday
729 ft
The area of the sign is square feet.

Answers

The area of the bake sale sign is 6 ft²

Area

Area is the amount of space occupied by a two dimensional object.

Rectangle is a quadrilateral (has four sides and four angles) in which opposite sides are equal and parallel.

The area of a rectangle = length * breadth

The area of the bake sale sign = length * breadth = [tex]\sqrt{4} *\sqrt[6]{729} = 6\ ft^2[/tex]

Find out more on Area at: https://brainly.com/question/25689052

WILL GIVE BRAINLIEST!!!!!!!

2(x+1)^2=12

Answers

Answer:

Step-by-step explanation:

help????????????????????​

Answers

Answer:

x=11

Step-by-step explanation:

12x+2 and 2x+112 are opposite exterior angles so they are congruent

Answer:

x=11

Step-by-step explanation:

12x + 2 and 2x + 112 are vertical angles meaning that they are equal to each other so we set up an equation that says 12x + 2 = 2x + 112 and solve for x

12x+2=2x+112

step one subtract 2 from each side

12x=2x+112

step 2 subtract 2x From each side

10x=110

step three divide each side by 10

x=11

pls help me plssssss

Answers

Answer:

1

Step-by-step explanation:

It's the correct spelling.

Answer 1 is correct but this is under the wrong category

Find the midpoint of the line segment from (4,5) to (-4,4)

Answers

9514 1404 393

Answer:

  (0, 4.5)

Step-by-step explanation:

The coordinates of the midpoint of a line segment are the average of the coordinates of the end points.

  ((4, 5) +(-4, 4))/2 = (4-4, 5+4)/2 = (0, 9)/2 = (0, 4.5)\

The midpoint is (0, 4.5).

558 cups of water fill 412 identical water bottles. How many cups fill each bottle ?

Answers

Answer:

5/4 cups fill each bottle

Step-by-step explanation:

5 5/8=45/8

4 1/2=9/2

Step by Step:

------------------

(45/8)/(9/2)

(45/8)(2/9)

(45/4)(1/9)

45/36

5/4

Every time Kristina bakes a batch of brownies, she uses 1/8
a cup of chocolate. If she has 3/4
cup(s) of chocolate remaining, how many batches of brownies can Kristina make?

Answers

Answer:

6 batches

Step-by-step explanation:

3/4 divided by 1/8 = 6/8 divided by 1/8 = 6 batches

Lcm of deno ( 4, 8 ) = 8

3x2/4x2 = 6/8. 3/4 = 6/8

Kristina can make 6 batches of brownies


Choose SSS, SAS, or AA to prove
the triangles are similar.

A. SSS
B. SAS
C. AA

Answers

Question :

Choose SSS, SAS, or AA to prove the triangles are similar.

A. SSS

B. SAS

C. AA

Answer :

As, all sides are given so we can use SSS to prove the triangles are similar.

So, correct option is A.

Explanation :

Given :

Sides of 1st triangle = 24, 32 and 40Sides of 2nd triangle = 27, 36 and 45

To Prove :

Triangles are similar

Proof :

As, all three sides are given so let's check ratio of all three sides.

1. [tex] \tt \cancel{\dfrac{24}{27}} = \dfrac{8}{9}[/tex]

2. [tex] \tt \cancel{\dfrac{32}{36}} = \dfrac{8}{9}[/tex]

3. [tex] \tt \cancel{\dfrac{40}{45}} = \dfrac{8}{9}[/tex]

As, all sides are in equal ratio.

So, by SSS

∆1 ~ ∆2

Whos HAPPYYYYY today

Answers

Answer:

meeeeeeeeeeee super happy

The question is in the picture

Answers

Answer:

(8, - 7)

Step-by-step explanation:

Since, (8, 7) is reflecting over x-axis, so after reflection, x- coordinate will remain same and y-coordinate changes from 7 to -7.

Therefore,

[tex] J(8,\: 7) \rightarrow J'(8,\: - 7)[/tex]

Answer:

-8,7 is the ans of the question

Help me PLEASE! I will give Brainliest to the first correct answer.

Jada’s dog was 5 and 1/2 inches tall when it was a puppy. Now her dog is 14 and 1/2 inches taller than that. How tall is Jada’s dog now?

Answers

Answer:

20 inches tall

Step-by-step explanation:

First, I did 1/2+1/2=1. Then, I did 5+14=19. So, 19+1=20.

Giselle's as a wallet containing four $5 bills, five $10 bills and three $20 bills. She pulls out two bills, one at a time without the first bill being returned to the wallet. Find the probability that both bills that she pulls out will be $5 bills.

Answers

Answer:

the answer is 4/12

Step-by-step explanation:

I WILL MARK BRAINLIEST

Answers

Answer:

[tex]\frac{81}{m^7}[/tex]

Step-by-step explanation:

We have a certain expression and are asked to find its equivalent with the answers provided :

[tex](3m^{-4} )^3(3m^5)[/tex]

Remove the parenthesis around 3m^5 :

[tex](3m^{-4} )^3*3m^5[/tex]

Do the exponent rule for outside and inside exponent parenthesis :

[tex](3m^{-4*3} )[/tex]

[tex]3^3m^{-12} *3m^5[/tex]

Apply addition exponent rule :

[tex]m^{-12} *3^{3+1} m^5[/tex]

Add :

[tex]m^{-12} *3^4m^5[/tex]

Apply the addition rule for -12 + 5 :

[tex]3^{4} m^{-7}[/tex]

Apply negative exponent rule for m^-7 :

[tex]3^4*\frac{1}{m^7}[/tex]

Multiply the fractions :

[tex]\frac{1*3^4}{m^7}[/tex]

[tex]\frac{81}{m^7}[/tex]

Find the value of x in the following figure.

Answers

Answer:

x = 8

Step-by-step explanation:

180-(89+57)= 180-146 = 34

(5x -6) = 34

5x = 34 + 6

5x = 40

x = 40 ÷ 5

x = 8

help
3 − 4 + 16 − 10 + 2=​

Answers

Step-by-step explanation:

3 - 4 + 16 - 10 + 2

= 7

hope it helps :)

Step-by-step explanation:

3 − 4 + 16 − 10 + 2 [B.O.D.M.A.S rule] (First addition)

= 3 + 16 + 2 - 4 -10

= 21 - 14. (Then subtraction)

= 7 (Ans)

Cool down tickets, a school is holding a carnival and hopes to raise $500. Child tickets cost $3 and adult tickets cost $5. If the school sells x child tickets and y adults, then the equation 3x + 5y=500 expresses the fact that school raised exactly $500 from ticket sales. Solve thevequation for x. 2. Explain whenot might be helpful to resrite the equation this way.

Answers

Answer:

x = 1/3(500 + 5y)

Step-by-step explanation:

Given that:

x child tickets for $3

y adult tickets for $5

3x + 5y = 500

To solve for x

3x = 500 + 5y

Divide through by 3

3x /3 = 500/3 + 5y/3

x = 1/3(500) + 1/3(5y)

x = 1/3(500 + 5y)

2.)

If the total number of tickets sold was made available, then a more direct solution would have been obtainable as we can have two different equations;

One for the total number of ticket sales and the other of the total revenue from ticket sales.

-2(6) + 3(5 – 4​· ​2)

Answers

Answer:

-21

Step-by-step explanation:

-21. First multiply -2 and 6 to get -12. Then use order of operations to simplify the second parenthesis. 4•2 is 8. 5-8 is -3. 3(-3) = -9. Combine the two to get -21. Hope that helps!

Mrs. Corbett signed 1/2 of all the holiday cards and Mr. Corbett signed 3/8 of all of them. Mrs. Smith will sign the rest of them. If there were 32 cards in all, how many are left to be signed by Mrs. Smith?

Answers

Answer:

4 cards

Step-by-step explanation:

1. Approach

First, find how much ([tex]\frac{1}{2}[/tex]) of all the holiday cards is. Then find out how much [tex]\frac{3}{8}[/tex] of all the cards is. After doing so, subtract both amounts from the total number of holiday cards.

2. Find out how many were signed

To find out how much a fraction of a certain value is, multiply the fraction by the value.

[tex]32*\frac{1}{2}=16\\\\32*\frac{3}{8}=12[/tex]

3. Find out how many were left

Now subtract the number of signed cards from the total number of cards.

[tex]32 -( 16 + 12)\\\\= 32 - 16 - 12\\\\= 16 - 12\\\\= 4[/tex]

Write the equation of the line that passes through the points (1,4) and (1,-3).
y = -7x+11
X=1
y = 7x - 3

Answers

x=1
if you try and find the gradient which is change in y/ change in x so 7/0 you get 0 (no gradient). And it can’t be y= 1 as the y values are 4 and -3

Solve each inequality for the variable. Show your work. 3x-7>4x+2

Answers

Step-by-step explanation:

3x-4x>2+7

-x>9

x>-9

Plz mark me as a brainlist

In an inverse variation, x = -6 when y = -1/2. What is the value of y when x = 4?

Answers

Answer:

[tex]9 \frac{1}{2} [/tex]

Step-by-step explanation:

just add 5.5 to each number and make it in fraction

hop it helps you

please mark me as brainlist

Here is an inequality: -x > 18. List some values for x that would make this inequality true.

Answers

Answer:

some examples x could equal:

x = -19

x = -20

x = -50

x = -100

so on

Step-by-step explanation:

remember negative x negative = positive

so any negative value beneath -18 will satisfy this because it will turn positive when multiplied by that outer minus sign.

hope this helped

Select the correct answer.
Identify the vertex of the function graphed below.


A.
(0,-2)
B.
(3,1)
C.
(1,1)
D.
(2,2)

Answers

Answer:

I think the answer is B

Step-by-step explanation:

Answer:

think it d

Step-by-step explanation:

because when i pick (3,1) it was wrong so that why it think it D

Can someone help me on this is for today pls!!!

Answers

Answer:

C

Step-by-step explanation:

The answer must be in square inches, not inches, so a and b are automatically wrong.

Couple of ways of doing it - the large triangles are congruent, so the area of each is the same. Since the area of a triangle is 1/2 base times height, the area of the 2 large triangles is just base times height, which is 18 * 11 or 198

Same principle for the smaller triangles at the top, area is 8 times 11, or 88. Add them up, you get 286 sq inches.

Zoltan read 15 pages of his book in 6 minutes. At this rate, how many pages can he read in 10 minutes?

Answers

Answer:

25 pages in 10 minutes.

Número de departamento vendidos en un edificio cualitativa o cuantitativa.​

Answers

Answer:The nucleus / large central vacuole contains

genetic material of a eukaryotic cell.

Step-by-step explanation:The nucleus / large central vacuole contains

Simplify.

6⁴


simplify that

Answers

Answer= 6^2

Step by step: when the coefficient of the power is the same number, it has different rules so for division it’s just subtracting the powers which are 4-2

Answer:

6⁴/4²

Since, a^m/a^n = a^m-n

→ 6^4-2

→ 6^2

→ 6*6 = 36 Ans.

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