Supplementary means they add up to 180
X + 54 = 180
180-54= x
X = 126
126+54=180?
Yep
So your answer is
126
:( sorry idk to this question
Answer: y=4x-7
Step-by-step explanation:

___________________________________________________________

So, we have the following equation...

Remember
and
is the following...

Therefore, 
So, your final answer is
.
___________________________________________________________
<em>Glad to help!</em>

Answer:
161.92 is the radius
If you want, you can round it to 162 units