Question

m varies jointly with the square of n and the square root of q. If m = 252 when n = 2 and q = 49, find m when n = 7 and q = 4.

Answer 1

m=n^2 sqrt(q) k

252
--------- = k
7^2 sqrt(4)

Answer 2

k = 252/49.2 = 252/98

m=(252/98) 7^2....read the prob bacwards lol

Answer 3

252 = k.2^2.sqrt(49)

252 = k.4.7

k = 252/28

Answer 4

m = (252/28).7^2.sqrt(4)

m = 252(49)(2)
---------
7(4)

Answer 5

m = 252(7)/2 = 126(7) = 700+140+42

m = 882