Answer:
The circumference of this circle is 10pi inches, which is roughly 31.4 inches.
Step-by-step explanation:
Use the formula for circumference. C= 2*radius*pi.
2*5*pi=10pi
pi=3.14, so multiply that by 10
3.14*10=31.4 inches.
18/4 = x/30
18x30 /4 = 135 minutes or 2 hours and 15 minutes.
Let x = number of problems on test
If he got 14 wrong, then x - 14 is the number correct.

x - 14 = .72x
.28x - 14 = 0
.28x = 14
x = 50
The test consisted of 50 problems.
Answer:
9
Step-by-step explanation:
just too the quiz on edge