Ask question

Ask question

All categories

3 years ago

5

-9+n=-18 step by step solution

1 answer:

valentinak56 [21]3 years ago

3 0

Step 1: -9+n=-18. You would add the inverse to both sides, meaning you’d add nine to the negative nine to cancel it out and then then 9 to -18.

-9+n=-18
+9 +9

That would leave you with the equation: n=-9, since -18 plus a positive 9 equals a negative nine. You’re final answer is n= -9.

You can check you answer by substituting the variable with the solution (-9).
-9 + -9= -18

You might be interested in

If 100 units of a product cost $5,000 and 200 units cost $8,000, what is the incremental cost per unit of the second 100 units?

olga2289 [7]

Answer:

(8000 - 5000) / (200 - 100) = $30

3 0

3 years ago

Many people who bought Z-Game gaming systems over the holidays have complained that the systems they purchased were defective. I

Bas_tet [7]

Answer:

The upper limit for the 95% confidence interval for the population proportion of defective gaming systems is 0.022

Step-by-step explanation:

Upper Limit for 95% Confidence Interval can be calculated using p+ME where

p is the sample proportion of defective gaming systems ( $\frac{18}{1200} = 0.015$ )

ME is the margin of error from the mean

and margin of error (ME) around the mean can be found using the formula

ME= $\frac{z*\sqrt{p*(1-p)}}{\sqrt{N} }$ where

z is the statistic of 95% confidence level (1.96)

p is the sample proportion ( $\frac{18}{1200}=0.015$

N is the sample size (1200)

Using the numbers we get:

ME= $\frac{1.96*\sqrt{0.015*0.985}}{\sqrt{1200} }$ ≈ 0.007

Then upper limit for the population proportion is 0.015+0.007 =0.022

4 0

4 years ago

Which of the following is a numerical expression?

Illusion [34]

C probably because a numerical expression uses numbers and does not have any equal signs at the end and it seems like the best answer

8 0

4 years ago

Read 2 more answers

last week your phone reported that you spent 3.5 hours on social media. This week it reported a 13% increase. How many hours did

erma4kov [3.2K]

13% increase = 113% = 1.13

3.5 x 1.13 = 3.955 hours per week

3.955 / 7 = 0.565 hours per day

8 0

3 years ago

Read 2 more answers

Your equation:<br><img src="https://tex.z-dn.net/?f=%20%7B3%7D%5E%7B%3F%7D%20%20%5Ctimes%20%20%7B3%7D%5E%7B%3F%7D%20%20%5Cdiv%20

Alisiya [41]

3^1x3^1/3^1=3

Steps

3x1=3
3x1=3
3/3=3

Hope that helps

7 0

3 years ago