Answer:
Step-by-step explanation:
How many questions is 90% of 20? That's the question we need to answer. Algebraically, the equation looks like this:
x = .90(20) so
x = 18
If she only answered 16 correctly, she did not get the A. She needed to answer 18 correctly, because 18 is 90% of 20.
Answer:
m = 19
Step-by-step explanation:
With a rate of change of -8
27 - 8 = 19
16 - 8 = 11
so m = 19
Answer:
56
Step-by-step explanation:
(4+7)²-(4²+7²)=121-65
=56
Answer:
55 feet
Step-by-step explanation:
40+15 feet
Answer:
83.3...
Step-by-step explanation:
Its a repeating decimal.
As a fraction It's 83 1/3