Find the missing side using similar triangles:
Please provide all steps.

Answer:
12.5
Step-by-step explanation:
first find scale factor of the triangles:
7.5 / 3 = 2.5
scale factor = 2.5
Then multiply the bottom length by the scale factor to find the missing length:
5 × 2.5 = 12.5
therefore the missing length is 12.5