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Bad White [126]
3 years ago
12

PLS HELP!! i need to figure it out please ill give brainliest

Mathematics
1 answer:
victus00 [196]3 years ago
8 0

Step-by-step explanation:

x is 12 because DE is twice BC

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A bivariate data set has x = 21, sx = 13, y = 55, sy = 27, and r = .88. What is the equation for the regression line of y on x?
earnstyle [38]

Answer:

c) y=16.57+1.83x

Step-by-step explanation:

Equation for regression line of y on x is given as

\hat{y}=mx+b --- (1)

where

\hat{y} = predicted value

m = slope of line

b = intercept

m and b are found as

m=r\frac{S_{y}}{S_{x}}---(2)\\\\b=\bar{y}-m\bar{x}---(3)

r = correlation coefficient = 0.88

Sx = standard deviation for independent variable x = 13

Sy = standard deviation for dependent variable y = 27

\bar{x} = mean value of independent variable x = 21

\bar{x} = mean value of dependent variable y = 55

Substituting these values in (2) and (3)

m=r\frac{S_{y}}{S_{x}}\\\\m=(0.88)\frac{27}{13}\\\\m=1.83

b=\bar{y}-m\bar{x}\\\\b=55-(1.827)(21)\\\\b=16.57

Putting these values of m and b in (1)

y=1.83x+16.57

5 0
3 years ago
Find the limit. Use l'Hospital's Rule if appropriate. If there is a more elementary method, consider using it. lim x→0+ (2x + 1)
ElenaW [278]

\displaystyle\lim_{x\to0^+}(2x+1)\cot x=\lim_{x\to0^+}\frac{2x+1}{\tan x}

As x\to0, the numerator approaches 1 while \tan x\to0, but since x\to0 from above we have \tan x>0, which suggests the limit is +\infty.

3 0
3 years ago
2/3 cups of raisins are mixed with 1/2 cup peanuts what is the ratio
krok68 [10]
3:5 because if you add the fractions together it is what you get so the 5 would be raisins and the 3 would be peanuts
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3 years ago
A game board with 17 spaces. Start, green, green, star, quesiton mark, question mark, star, question mark, green, cat town, gree
erastova [34]

Answer:

Possibly the answer is 2 green spaces, 2 star spaces, 3 question mark spaces

Step-by-step explanation:

7 0
3 years ago
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A right circular cylinder has a radius of 5 inches and a height of 10 inches. what is its volume?
Aloiza [94]
V=πr2h

v=π(5)^2(10)

v=250π

v=785 inches cubed
6 0
3 years ago
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