All categories

3 years ago

Explain how you distribute a factor to terms in parenthesis

1 answer:

4 0

Let's say the question is 2(x+3),

You multiply the number outside the brackets by EVERYTHING inside the brackets so,

2(x+3)
=2x+6 *Notice how 2(x)=2x and 2(3)=6.*

You might be interested in

An anthropologist wishes to estimate the average height of men for a certain race of people. If the population standard deviatio

mario62 [17]

Answer:

The probability that the difference between the sample mean $\bar{x}$ and the true population mean $\mu$ is : $P[|\bar{x}-\mu|\leq0.7]=0.9876$

Step-by-step explanation:

Given :

Population standard deviation $\sigma=2.8$ .

Sample size $n=100$

The sample mean standard deviation $=\frac{\sigma}{\sqrt{n}}$

To find :

The probability that the difference between the sample mean $\bar{x}$ and the true population mean $\mu$

$\because\frac{\sigma}{\sqrt{n}}=\frac{2.8}{\sqrt{100}}=\frac{2.8}{10}=0.28$

Now, the probability that the difference between the sample mean $\bar{x}$ and the true population mean $\mu$ is :

$P[|\bar{x}-\mu|\leq0.7]$ , $n$ is large $\Rightarrow \frac{\bar{x}-\mu}{\frac{\sigma}{\sqrt{n}}}=z$

$\Rightarrow P[\frac{\bar{x}-\mu}{\frac{\sigma}{\sqrt{n}}}$

$\Rightarrow P[z$

$\Rightarrow P[-2.5$

Therefore, the probability $P[|\bar{x}-\mu|\leq0.7]=0.9876$

5 0

3 years ago

Use the DISTRIBUTIVE PROPERTY to simplify the expression. 4(3r - 8)

Over [174]

Answer:

12r-32

Step-by-step explanation:

Distribute the 4 between the different numbers.

3r * 4 = 12r and 8 * 4 = 32

So...you end up with 12r-32

3 0

3 years ago

Anyone know the answer? Pls help

makvit [3.9K]

The answer would be c

6 0

3 years ago

Select all the irrational numbers

tiny-mole [99]

Answer:

A and E would be your answer

Step-by-step explanation:

5 0

2 years ago

Read 2 more answers

Mr. Gubareff gave his class 15 minutes to read. Sabira read 6 ¼ pages in that time. At what rate, in pages per hour, did Sabira

creativ13 [48]

Answer:

I think its 25 (proceed with caution)

Step-by-step explanation:

15×4=60 so basically 6.25×4=25

6.25 = 6 1/4

4 0

3 years ago

Read 2 more answers