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3 years ago

Factor completely 4x2 − 32.

Mathematics

2 answers:

Elena-2011 [213]3 years ago

4 0

Answer:

Step-by-step explanation:

Korvikt [17]3 years ago

3 0

Answer: 4(x + 4)(x - 4)

Step-by-step explanation:

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Maslowich

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3 years ago

2(-2-4) = use the distributive property to expand the expression below.

Doss [256]

Answer:

-12

Step-by-step explanation:

First, solve in parentheses.

2(-2-4)

2(-6)

Next, multiply 2 by -6.

Which equals -12.

So therefore using the distributive property shown above, the answer would be -12.

6 0

2 years ago

Read 2 more answers

Decimals between 10 and 15 with an interval of .75 between each pair of decimals

d1i1m1o1n [39]

This is a sum that needs understanding the starting and the ending number first. then you should understand that between the starting and the ending number there has to be pairs of numbers with a difference of 0.75.
The numbers are:
10.75, 11.50, 12.25, 13.00, 13.75, 14.50.

6 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

#SPJ4

7 0

2 years ago

Jan earns 4256 this year which is 28% over last year. What was her salary last year?

bulgar [2K]

This should help you!

6 0

2 years ago