Answer:
11
Step-by-step explanation:
A triangle has 180 degrees, and two of them are given, so you subtract them from 180 to 110. But since it is 10x, you have to divide by 10 to get your answer.
(hope this helps!)
x(x-9)+7(x-9)
x²-9x+7x-63
x²-2x-63
7 1/4
12 3/4- 5 1/2
so, it went down from 1250 to 1000, namely 1250 - 1000 = 250.
now, if we take 1250 to be the 100%, what is 250 off of it in percentage?