Question

Find the missing side length

Answer 1

24

Explanation:

5:5+5x1.4 as 10:10+10x1.4 or 24

Answer 2

14

Explanation:

Since they are similar triangles, we can use proportions

5 10

------ = -------------

5+7 10+?

5 10

------ = -------------

12 10+?

Using cross products

5( 10+?) = 12*10

Divide each side by 5

10+? = 12*10/5

10+? = 24

Subtract 10 from each side

10+?-10 = 24-10

? = 14