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AnnZ [28]
3 years ago
15

Write an equation that represents the line.

Mathematics
1 answer:
Lana71 [14]3 years ago
3 0
Do not click in the link above, the guy is a scammer, report his account to help others !
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Add the following complex numbers:<br> (6 - 21) + (11 +61)
umka2103 [35]

Answer:

ugh I think its red

Step-by-step explanation:

I'm kidding its 57

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3 years ago
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A college job placement office collected data about students’ GPAs and the salaries they earned in their first jobs after gradua
frez [133]

Answer:

X is the GPA

Y is the Salary

Standard deviation of X is 0.4

Standard deviation of Y is 8500

E(X)=2.9

E(Y)=47200

We are given that The correlation between the two variables was r = 0.72

a)y = a+bx

b = \frac{\sum(x_i-\bar{x})(y_i-\bar{y})}{\sum(x_i-\bar{x})^2} = \frac{r \times \sqrt{var(X) \times Var(Y)}}{Var(X)} =  \frac{0.72 \times \sqrt{0.4^2 \times 8500^2}}{0.4^2} = 15300

a=y-bx = 47200-(15300 \times 29) = 2830

So, slope =  15300

Intercept =  2830

So, equation : y = 2830+15300x

b) Your brother just graduated from that college with a GPA of 3.30. He tells you that based on this model the residual for his pay is -$1880. What salary is he earning?

y = 2830+15300 \times 3.3 = 53320

Observed salary = Residual + predicted = -1860+53320 = 51440

c)) What proportion of the variation in salaries is explained by variation in GPA?

The proportion of the variation in salaries is explained by variation in GPA = r^2 = (0.72)^2 =0.5184

8 0
3 years ago
Y=2x-3<br> y=x+2 system of equations
irina1246 [14]

Answer:

x = 5

y = 7

Step-by-step explanation:

<em>Since they are both equal to </em><em>y</em><em>, we can set them equal to each other.</em>

2x - 3 = x + 2

<em>Combine like terms and isolate the </em><em>x</em><em>.</em>

x = 5

<em>Plug in the x to either equation to get the value of </em><em>y</em><em>.</em>

y = (5) + 2

y = 7

6 0
3 years ago
A wagon wheel has a radius of 4.9 inches. Which of the following is closest to the distance the wagon travels in two turns of th
Otrada [13]

Answer:

Just under 62 inches.

Step by Step:

4.9×2×Pi= 30.7876080052. x2= 61.5752160104

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WHOEVER ANSWERS CORRECTLY I'LL GIVE BRAINLIEST!!!!!!!!!!!
Likurg_2 [28]

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answer what ?

Step-by-step explanation:

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