Question

Find the missing side length in the image attached.

Answer 1

? = 35.

Explanation:

According to the diagram...

? / 42 = 30 / (66 - 30)

? / 42 = 30 / 36

? / 42 = 5 / 6

6 * ? = 42 * 5

? = 7 * 5

? = 35

Hope this helps!

Answer 2

Answer: 35

Explanation:

Set up the proportion as follows:

`(66)/(30)=(42+x)/(x)\\\\\\66x=30(42+x)\\\\\\66x=1260+30x\\\\\\36x=1260\\\\\\x=(1260)/(36)\\\\\\x=\large\boxed{35}`