3 years ago

Please help. I need the answer asap

Mathematics

1 answer:

Ymorist [56]3 years ago

4 0

Do u still need the answer its been 2 weeks now!

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you have $200 in a savings account. each week for 8 weeks, you take out $18 for spending money. how much money is in your accoun

Furkat [3]

200 - 8 * 18 = 56
Total money - Week * Cost per week

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3 years ago

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Pls hlp!!<br> read the bottom and answer

luda_lava [24]

m=52h

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3 years ago

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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)

$y=1.83x+16.57$

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3 years ago

What is the solutiion to this system 3x+2y=8 -x=+y=-11

mr Goodwill [35]

Answer:

2, 19, -3

Step-by-step explanation:

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3 years ago

Write the equation of the line.

kotykmax [81]

Answer:

y = 4

Step-by-step explanation:

Since the line in question is parallel to the x axis, we can tell that going from one end of the line to the other, x value changes, but y value always stays the same and equals 4.

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3 years ago