The answer for the last one is-36
Answer:
Step-by-step explanation:
27 ÷ 90 = 0.3 = 0.30 = 30%
Rotation and translation are rigid transformations, they don't change figure sizes. Dilation change figure sizes increasing or decreasing them by scale factor.
First, find AB and A'B' by the formula:

As you can see AB=2A'B'. This means that the segment AB was decreased twice to form segment A'B'. Then the scale factor is 1/2.