Answer:12
Step-by-step explanation:
The correct answer for this problem is A.
-7x+12-2x=23+13x
First take away 13x from the right side and put it on the left side adding taking it away from -7x
-7x(-13x)=-20x
-20x+12-2x=23
then add 2x to -20x
and move 12 to the other side, minus it off of 23
-18x=11
then divide -18x on both sides
then x=-11/18
Since your average mile is per hour and feet is per second you should get 1.4666667 Feet per Second.
I hope I helped!!!!!
Well formula is pie times radius squared times height over 3
Plug it all in and your answer is 20.94
