Definition of supplementary angles. Hope this helps. Can you mark me as brainliest if you can? I really appreciate it!
Answer:
see below
Step-by-step explanation:
5^2 means 5*5 not 5*2
5^2 = 5*5 = 25 not 10
Answer:
a. 40
Step-by-step explanation:
Given
and 


We plug in 2x into
.


We now substitute x=-3.


The correct choice is A.