Question

what scale factor was applied to the first rectangle to get the resulting image? enter your answer as a decimal in the box.

Explanation:

Step1: Identify corresponding sides

Original base: $2.5$, image base: $0.5$

Step2: Calculate scale factor

$\text{Scale factor} = \frac{\text{Image side}}{\text{Original side}} = \frac{0.5}{2.5}$

Step3: Simplify the fraction

$\frac{0.5}{2.5} = 0.2$

Answer:

0.2