Question

The measure of QR IS 15 cm, and the measure of Q'R' is 52.5 cm. Which scale factor was used for the dilation?A. 7B. 2C.2/7D.7/2

Answer 1

Answer:

The correct option is D

7/2

Explanation:

Given that the measure QR is 15 cm, and Q'R' is 52.5 cm.

To know the scale factor used for the dilation, we have:

$15=\frac{52.5}{x}$

Solving for, x, we have what we are looking for.

Multiply both sides by x

$15x=52.5$

Divide both sides by 15

$x=\frac{52.5}{15}=\frac{7}{2}$