Question

Round to the nearest tenth.

Answer 1

16.8

Explanation:

Assuming the triangles are similar, write a proportion to find x.

`(20)/(30)=(28-x)/(x)`

Cross multiply the numerator and denominator of each fraction.

20x=30(28-x)

20x = 840 - 30x

50x = 840

x = 16.8