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Alenkasestr [34]
3 years ago
8

Use the given data to find the equation of the regression line. examine the scatterplot and identify a characteristic of the dat

a that is ignored by the regression line. x 1212 1313 66 55 1010 1111 77 99 33 88 44 y 20.2120.21 20.2320.23 13.1913.19 10.8710.87 19.1919.19 19.8719.87 15.1815.18 18.1818.18 5.235.23 16.8516.85 8.218.21 modifyingabove y with caretyequals

Mathematics
1 answer:
kari74 [83]3 years ago
7 0

Answer:

y = 1.5x + 3.2009  

Step-by-step explanation:

I plotted your points and drew a linear regression line.

Its equation is

y = 1.5x + 3.2009

The regression line ignores the fact that the points fall along a smooth curve.

A parabolic regression line fits the data much better.

The equation for that line is

y = - 0.1647x² + 4.1357x - 5.6946

It is the equation for a vertical parabola opening downward.

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Dafna11 [192]

Answer:

0.25feet

Step-by-step explanation:

The equation is not well written. Let the equation of the height be modelled as;

h = -16d²+8d+4

The velocity of the ball is zero at its maximum height.

Velocity = change in displacement/time

v = dh/dd

Differentiate

v = -32d+8

Since dh/dd = v = 0

0 = -32d+8

Add 32d to both sides

0+32d = 8

32d = 8

Divide both sides by 32

32d/32 = 8/32

d = 1/4

d = 0.25feet

Hence the maximum height of the tennis ball is 0.25feet

Note that the modeled equation was assumed. You can apply the same calculation to any equation given

3 0
3 years ago
-15+3-7 is greater than less than or equal to -9-1+16
lisov135 [29]

Answer:less than

Step-by-step explanation:

-15+3-7=-19

-9-1+16=6

A positive will always be bigger than a negative

5 0
3 years ago
Read 2 more answers
Which expression has the least value when x = 400
Nadusha1986 [10]

Answer:

A

Step-by-step explanation:

because if you divied 100 by 400 it is a lot less than the others

5 0
2 years ago
Will Mark as Brainliest?
GaryK [48]

Answer:

Step-by-step explanation:

a.

slope=-1/2

b.

eq. of line is

y-0=(-2-0)/(0-(-2)(x-(-2))

y=-2/2  (x+2)

or y=-x-2

5 0
3 years ago
Help anyone can help me do the question 4,I will mark brainlest.​
nasty-shy [4]

Answer:

Hello,

Step-by-step explanation:

A=(1,2)\\B=(0,-1)\\\overrightarrow{AB}=((0,-1)-(1,2)=(-1,-3)\ ||\overrightarrow{AB}||^2=1+9=10\\\overrightarrow{BC}=((3,-2)-(0,-1)=(3,-1)\ ||\overrightarrow{BC}||^2=9+1=10\\\\Triangle\ is\ isosceles.\\\\\overrightarrow{AB}.\overrightarrow{BC}=(-1,-3)*\left[\begin{array}{c}3\\-1\end{array}\right] =-3+3=0\\\\Triangle \ is\ right.\\\\

8 0
2 years ago
Read 2 more answers
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