The mean is the average.
To solve for the average we add all the numbers up and divide by how many numbers there are.
21, 23, 25, 25, 26, 28, 28, 28, 31, 33.
268 total, now divide by how many numbers there are.
268/10
Your mean is 26.8
Answer:
i believe it is 497 after the 30% mark down
Step-by-step explanation:
i subtracted 30% from 710
Step-by-step explanation:
perimeter is 4x+6 +20x-8=20x-2
area is 20x^2+22x-12
Answer:
c
Step-by-step explanation:
x = –3 and x = 2
His monthly bill before he installed the new windows was $339.074...
<u><em>Explanation</em></u>
Suppose, his monthly bill before he installed the new windows was
dollar.
As his energy bill was decreased by 7.1% per month after installation, so <u>the amount of bill decreased</u>
dollar
Given that, his new energy bill was $315. So the equation will be...

So, his monthly bill before he installed the new windows was $339.074...