Randy draws three triangles with links given in centimeters. What scale factor does she use to create the copy of the right from the original on the left the right is 36 inches 20 inches and 30 inches the left is 10 inches 15 inches and 18 inches.

To find the scale factor, we need to compare the corresponding side lengths of the original and the copy.

The corresponding side lengths are:
Original triangle: 36 inches, 20 inches, and 30 inches
Copy triangle: 10 inches, 15 inches, and 18 inches

We will compare the longest side of the original triangle (30 inches) to the longest side of the copy triangle (18 inches).

Scale factor = copy length / original length
= 18 inches / 30 inches

Simplifying the fraction, we get:
= 3/5

Therefore, the scale factor Randy uses to create the copy of the right triangle from the original triangle is 3/5.