Question

Find the length of JL
15
None of the other answers are correct
12
3

Answer 1

D: 12

Explanation:

The entire segment KI is composed of the segments KJ and JI. So:

`KI=KJ+JI`

We know that KI is 15.

KJ is (2x-15) and JI is (2x-6). Substitute:

`15=(2x-15)+(2x-6)`

Solve for x. Combine like terms:

`15=4x-21`

Add 21 to both sides:

`4x=36`

Hence, the value of x is:

`x=9`

We know that JI is 2x-6.

We will substitute 9 for x to find JI. So:

`JI=2(9)-6=18-6=12`

Hence, our answer is D.