Question

what is the value of x/y if 28/x^2=7/xy?
F. 4
G. 4x^2
H. 4xy
J. 28y
K. 196

Answer 1

Solve the following for x:\[\frac{28}{x^2}\text{=}\frac{7}{x y}\]\[x=4 y \]Can you now guess what x/y is?

Answer 2

\[\frac{28}{7} = \frac{x^2}{xy}\]

\[\frac{7}{7}\left(\frac{4}{1}\right) = \frac{x}{x}\left(\frac{x}{y}\right)\]
\[\frac{4}{1} = \frac{x}{y}\]