The answer is
A) 6x+12x+90=180
Here's x
18x=180-90
18x=90
x=90/18
x=5
given: s is the midpoint of rt
definition of midpoint: rs st
given: st xy
transitive property of congruence: rs xy
t = 45 - 5(11-7)
Hope that helps:)
Answer:
I is at least ten because of nine it rounds to ten
I need a image otherwise I can't answer this question