Line segment AC has a length of 120 and contains
point B.If AB=5x+20andBC=6x-10, which
equation shows the relationship between the lengths
of line segments AB, BC, and AC?
A)5x+20=120
B)6x-10=120
lest
C)(5x+20)-(6x-10)=120
D)(5x+20)+(6x-10)=120