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3 years ago

ANSWER PLEASEEE

Mathematics

1 answer:

PtichkaEL [24]3 years ago

5 0

Step-by-step explanation:

-3x+2=11

-3x=11-2

-3x=9

x=9÷(-3)

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What is an equation of the line that passes through the points (-3,1) and (-4,0)

kicyunya [14]

Answer:

y = x + 4

Step-by-step explanation:

The slope = (1 - 0)/(-3-(-4)) =1
1 = -3 + x, x =4
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Answer:

<h2> Driver B has the fastest race time</h2>

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From the options presented, driver B has the fastest typical race time because he recorded the smallest time taken to complete an individual race.

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3 years ago

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6 0

3 years ago

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3 people can build a shed in 8 hours how long would it take 5 people

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8 0

3 years ago

A sample was taken of the salaries of four employees from a large company. the following are their salaries, in thousands of dol

Free_Kalibri [48]

For given sample of salaries of four employees, the variance of their salaries is: 26 thousands of dollars

The formula for the variance is,

$S^2=\frac{\sum (x_i - \bar{x})^2}{n-1}$

where,

$S^2$ = sample variance

$x_i$ = the value of the one observation

$\bar{x}$ = the mean value of all observations

n = the number of observations

For given question,

n = 4

First we find the mean of their salaries.

(33 + 31 + 24 + 36 ) / 4 = 31

So, $\bar{x}=31$

Using the formula for variance ,

$S^2=\frac{(33-31)^2}{4-1}+\frac{(31-31)^2}{4-1}+\frac{(24-31)^2}{4-1}+\frac{(36-31)^2}{4-1}\\\\ S^2=\frac{4}{3} + \frac{0}{3} + \frac{49}{3} + \frac{25}{3} \\\\S^2= \frac{4+49+25}{3}\\\\S^2=\frac{78}{3} \\\\S^2=26$

Therefore, for given sample of salaries of four employees, the variance of their salaries is: 26 thousands of dollars

Learn more about the variance here:

brainly.com/question/13673183

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7 0

2 years ago