4 years ago

PLZ HELP THIS IS ON MY MATH HOMEWORK AND IS DUE TOMORROW!!!!!!!!!!

1 answer:

lisabon 2012 [21]4 years ago

5 0

4(x+2)= 4x+8
3(x+7)= 3x+21
You just need to multiply the number outside the parentheses with the numbers in the parentheses.

You might be interested in

Which of the following numbers is NOT and integer?

Anarel [89]

Answer:

2.5

Step-by-step explanation:

its a decimal

8 0

3 years ago

Dean Halverson recently read that full-time college students study 20 hours each week. She decides to do a study at her universi

romanna [79]

Answer: The p-value is 0.154.

Step-by-step explanation:

Since we have given that

We claim that

Null hypothesis :

$H_0:\mu=20$

Alternate hypothesis :

$H_1:\mu$

Population mean = 20 hours

Sample mean = 18.5 hours

Sample standard deviation = 4.3 hours

Sample size n = 35

So, test statistic would be

$z=\dfrac{\bar{X}-\mu}{\dfrac{\sigma}{\sqrt{n}}}\\\\z=\dfrac{18.5-20}{\dfrac{4.3}{\sqrt{35}}}\\\\z=\dfrac{-1.5}{0.726}\\\\z=-2.066$

So, the p value would be 0.154.

Hence, the p-value is 0.154.

4 0

4 years ago

Which number line represents the solution set for the given inequality x + 1 < (or equal to) -3 OR -4x < -8

vampirchik [111]

we are given inequalities as

$x+1\leq -3$

Subtract both sides by 1

$x+1-1\leq -3-1$

$x\leq -4$

so, we get interval as

$(-\infty,-4]$

we have

$-4x$

we can divide both sides by -4

$\frac{-4x}{-4} >\frac{-8}{-4}$

$x >2$

so, we get interval as

$(2,\infty)$

now, we can combine them

$(-\infty,-4]$ ∪ $(2,\infty)$

now, we can draw number line and locate this interval

we get

8 0

3 years ago

Read 2 more answers

Paul can type 60 words per minute and Jennifer can type 80 words per minute. How does Paul's typing speed compared to Jennifer's

dybincka [34]

20 less then jennifer

7 0

3 years ago

The temperature in a town is 36.6 F during the day and -12.6 F at night. What is the temperature change from day to night.

umka21 [38]

Answer:

-50F

Step-by-step explanation:

;)

8 0

3 years ago