Answer:
90deg
Step-by-step explanation:
If the angles are supplementary, that means mA + mB = 180*
we know that
mA = (2x + 8)deg
mB = (2x + 8)deg = mA
mA + mB = 180deg
mB + mB = 2mB = 180deg
mB = 90deg
Note, that we did not need to compute x even, because the angles were the same.
Answer:
x=3
Step-by-step explanation:
2(x-1)=4
2x-2=4
2x=4+2
2x=6
x=6/2=3
Answer:
See below
Step-by-step explanation:
Given polynomial is: 
a. Terms:
b. 17 and - 1
c. Binomial or quadratic polynomial