All categories

2 years ago

Use the distributive property to expand 7(5+x)

Mathematics

2 answers:

ahrayia [7]2 years ago

5 0

Answer:

$\boxed{\sf{35+7x}}$

Step-by-step explanation:

To solve this problem, you have to use the distributive property.

Distributive property:

⇒ A(B+C)=AB+AC

7(5+x)

Expand.

Solve.

7*5+7x

7*5=35

$\Longrightarrow: \boxed{\sf{35+7x}}$

Therefore, the final answer is 35+7x.

I hope this helps. Let me know if you have any questions.

Annette [7]2 years ago

4 0

Answer:

35 +7x

it is because 7x5= 35 and 7 x X = 7x

together they make 35 + 7x

Step-by-step explanation:

You might be interested in

PLEASE HELP ME I ONLY HAVE 20 MINUTES!!!!

Over [174]

$h(x) = 40x - 16x^2\\h(x) = 15\\40x - 16x^2 = 15\\-16x^2 + 40x - 15 = 0\\$

Using the quadratic formula we get

$x_1 = 0.5\\x_2 = 2.04$

Therefore the tennis ball is at least 15 feet above the ground from 0.5 seconds to 2.04 seconds

7 0

3 years ago

PLEASE HELP ME , GET ON HONOR ROLL PLEASE NEED YOUR HELP

marta [7]

Answer:

19 ft i think

Step-by-step explanation:

hop ethis helps :) have a nice day

7 0

3 years ago

If you want to be 95% confident of estimating the population mean to within a sampling error of plus or minus3 and the standard

Aleksandr [31]

Answer:

The sample size required is at least 171

Step-by-step explanation:

We have that to find our $\alpha$ level, that is the subtraction of 1 by the confidence interval divided by 2. So:

$\alpha = \frac{1-0.95}{2} = 0.025$

Now, we have to find z in the Ztable as such z has a pvalue of $1-\alpha$ .

So it is z with a pvalue of $1-0.025 = 0.975$ , so $z = 1.96$

Now, find the margin of error M as such

$M = z*\frac{\sigma}{\sqrt{n}}$

In which $\sigma$ is the standard deviation of the population and n is the size of the sample.

What sample size is required?

A samle size of at least n is required, in which n is found when $M = 3, \sigma = 20$

$M = z*\frac{\sigma}{\sqrt{n}}$

$3 = 1.96*\frac{20}{\sqrt{n}}$

$3\sqrt{n} = 20*1.96$

$\sqrt{n} = \frac{20*1.96}{3}$

$(\sqrt{n})^{2} = (\frac{20*1.96}{3})^{2}$

$n = 170.7$

Rouding up

The sample size required is at least 171

5 0

3 years ago

Is y = 5(1.04)* A. growth or B. decay?

Ilya [14]

Answer:

growth

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

josan and andrea are on a long distance bike ride. they decide they will stop for water if either of thier water bottles is less

nevsk [136]

If it is less than full it means it is anything below 5/5 or 6/6, so they both have less than full water bottles...

If you meant less than half full, Josan has 0.5/5 less than half, so yes, They should stop in this case as well.

8 0

3 years ago