Question

HELP PLEASE

Answer 1

\[\frac{6}{48}=\frac{x}{72}\]

Answer 2

If an object's mass m and weight w vary directly, that means that they are related by the equation a*m = w for some constant of variation a. In this case, we know when m = 6, w = 48, so we can solve for a: a*6 = 48 --> a = 8

Then we can solve the second part of the problem: if we know the weight is 72, we get 8*m = 72. Solve for m