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

The correct option is D

7/2

Step-by-step 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=(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=(52.5)/(15)=(7)/(2)`