Answer:
55f + 45
Step-by-step explanation:
5 (11f +9)
5 times 11f, then 5 times 9
55f + 45 -> since the 9 was positive we add!
I hope this helps you!
Answer:
B
Step-by-step explanation:
The number
is 8 times greater than 
thus, 
multiply both sides by 
we get 
if we take a = 2.5 and b = 3.1 we get 2.5/3.1 = 0.8
then B is the answer
Answer:
Step-by-step explanation:
if S=2*Π*r*h
h=S/(2*Π*r)
Note that any number divided by 0 is undefined.
From the problem,

Since 87 is divided by 0, the answer is undefined
He could have scored 7, 14, 21, 28, 35, or 42 points (all multiples of 7 less than 45).
answer: B