Question

Can someone please help me.

Answer 1

x = 7.2

Explanation:

the segment DA is an angle bisector and divides the opposite side from the bisected angle into segments that are proportional to the other two sides , that is

`(BD)/(CD)` =
`(AB)/(AC)` ( substitute values )

`(x)/(12)` =
`(12)/(20)` ( cross- multiply )

20x = 12 × 12 = 144 ( divide both sides by 20 )

x = 7.2