Question

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

Answer 1

Answer:

D: 12

Step-by-step 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.