Answer:
C
Step-by-step explanation:
The common ratio (r) can be found as
r =
=
=
→ C
A line adds up to equal 180 degrees. And adjacent angles also add to equal 180 since they share a side on a line. So add them together and make them equal 180
9x - 7 + 8.5x + 4 = 180
17.5x - 3 = 180
17.5x = 183
x = 10.5
Answer:
m=84
r:m = 1:7
therefore when r= 1 then M=14

I think that's how you do it
It's B.
4X+2_>-6
-subtract 2 to the other side
4x_>-8
-divide 4 to both sides to get X by itself
X_> -8/4
-Simplify
X_> -2