Question

The triangle on the right is a scaled copy of the triangle on the left. Identify the scale factor. Express your answer as a fraction in simplest form.

Answer 1

Answer:
`(7)/(10)`

Explanation:

The scale factor is the ratio of the side length of the image to the length of the corresponding side of the preimage.

So, the scale factor is
`(28)/(40)=(7)/(10)`.