3 years ago

Helpppppp pls i really do

Mathematics

1 answer:

Alexus [3.1K]3 years ago

4 0

Answer:

domain: -3 < x <2

range: -2 < x < 4

Step-by-step explanation:

domain is the total x values and range is the total y values

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Are the numbers from the table -2, 0, 2, and 4 linear or nonlinear? how about -1, 0, 1, 2?

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The height above the surface of the Earth (in meters) of a rock thrown into the air at 10 m/s after x seconds is given by f(x)

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The area of a living room is 24 square yards if the width is 12 feet what is the length of the living room in yards ?

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3 years ago

Solve 3^x − 2 = 3^7 A. 2 B. 5 C. 7 D. 9

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Step-by-step explanation:

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3^x−2+2=2187+2

3^x=2189

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3 years ago

The mean height of married American women in their early twenties is 64.5 inches and the standard deviation is 2.5 inches. The m

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The equation for regression line and predicting a husband's height for married couples in their early 20s

Equation: Y'=33.67+0.54*X'

Step-by-step explanation:

r=0.5

x'=64.5

Sx=2.5

y'=68.5

Sy=2.7

General regression line equation is:

Y'=a+b*X'

so the slope of the regression line is the linear correlation coefficient multiplied by the standard deviation for y' divided by the standard deviation for x'

$b=r*\frac{S_{y}}{S_{x}}\\b=0.5*\frac{2.7}{2.5}\\b=0.54$

The intercept with axis y is the mean of the decreased by the product of the slope and the mean of x

$a=y'-b*x'\\a=68.5-0.54*64.5\\a=33.67$

The equation regression line then is:

Y'=33.67+0.54*X'

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3 years ago

Helpppppp pls i really do​

Helpppppp pls i really do