Question

rectangle r is a scaled copy of rectangle q. what is the value of x?

Explanation:

Step1: Set up proportion

Since the rectangles are scaled - copies, the ratios of corresponding sides are equal. So, $\frac{30}{15}=\frac{x}{9}$.

Step2: Cross - multiply

$15x = 30\times9$.

Step3: Solve for x

$15x=270$, then $x=\frac{270}{15}=18$.

Answer:

18