3 years ago

How do I work this out?

Mathematics

1 answer:

Maslowich3 years ago

7 0

Here is the work and the answers. Hope this helps! Message for any conversations.

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<img src="https://tex.z-dn.net/?f=%5Csf%20-9%288-2h%29" id="TexFormula1" title="\sf -9(8-2h)" alt="\sf -9(8-2h)" align="absmiddl

coldgirl [10]

Answer:

$- 9(8 - 2h) \\ by \: distributive \: property \\ = - 9 \times 8 - ( - 9) \times ( - 2h) \\ = - 72 - 18h$

3 0

2 years ago

Read 2 more answers

2x+16=7+2x <br>how do you solve if the variable is the same on both sides of the equation

jeka94

First subtract the 7 from both sides and that would equal 2x+9=2x then subtract 2x and the answer is 9

7 0

3 years ago

Read 2 more answers

In the beginning of the study, a randomly selected group of 121 students scored an average of 252 words per minute on the readin

Alborosie

Answer:

Since the sample size is larger than 30, the cognitive psychologist can assume that the sampling distribution of M will be approximately normal.

Step-by-step explanation:

We use the central limit theorem to solve this question.

The Central Limit Theorem estabilishes that, for a random variable X, with mean $\mu$ and standard deviation $\sigma$ , a sample size larger than 30 can be approximated to a normal distribution with mean $\mu$ and standard deviation $s = \frac{\sigma}{\sqrt{n}}$