Hey there!
The correct answer is 
~ Write the equation
~ Simplify
~ Subtract
from both sides
~ Subtract
from both sides
~ Divide both sides by 8
Hope it helps and have a great day!
It must be about the origin in order to do that
We have that
<span>Bisector theorem--------------- >(LM)/(LN)=(OM)/(ON)
therefore
</span>(18)/(10)=(x)/(4)------------------ > x=7.2
the answer is x=7.2
The exact answer is 123.592105263
Hope This Helps You!
Good Luck Studying :)