Answer:
∠9 and ∠12
Step-by-step explanation:
Supplementary angles are two angles that add up to 180. Looking at all the answer choices, A, C, and D have either Big-Big angle or Small-Small angle. What we need is Big-Small angle that is next to eachother, which is ∠9 and ∠12.
Hope this helped.
(Also sorry!)
4x-26=2x-4
+26 +26
4x=2x+22
-2x -2x
2x=22
/2 /2
x=11
To square a number means to multiply it by itself. So 9 squared would be:
9x9
Which is
81
I hope this Helps!
