Question

20 X= 12 с 16 B Enter your answer in the box. D C F 4​

Answer 1

x = 5

Explanation:

given the triangles are similar then the ratios of corresponding sides are in proportion, that is

`(DF)/(AC)` =
`(EF)/(BC)` ( substitute values )

`(x)/(20)` =
`(4)/(16)` ( cross- multiply )

16x = 20 × 4 = 80 ( divide both sides by 16 )

x = 5