Use the figure at the right. If JK=9x+13 and NO=20, what is the value of x?

Answer:
x = 3
Step-by-step explanation:
NO is a midline segment and is half the length of JK
Since NO = 20 then JK = 2 × 20 = 40, thus
9x + 13 = 40 ( subtract 13 from both sides )
9x = 27 ( divide both sides by 9 )
x = 3