SOLUTION: Suppose m varies directly as the square of n. If m = 187.2 when n = 12, what is m when n = 20?

Algebra ->  Percentage-and-ratio-word-problems -> SOLUTION: Suppose m varies directly as the square of n. If m = 187.2 when n = 12, what is m when n = 20?      Log On


   

Question 1158522: Suppose m varies directly as the square of n.
If m = 187.2 when n = 12, what is m when n = 20?
Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
m=kn^2
187.2=k*12^2=144k
k=1.3
use that below
m=1.3*20^2
m=520