Something to remember is how to multiply terms with same bases, but different exponents:

Essentially, we add the exponents.
Using the information above, we can find our answer:

Our answer is
, or A.
Answer:
x = 35 degrees
Step-by-step explanation:
the little box on the left side of the ttriangle means that is a 90 degrees angle.
So you add 55 + 90 = 145
Then subtract 180 - 145
which gives you 35
Answer:
B. -2
Step-by-step explanation:
Answer:
arc of WXY= 224°
Step-by-step explanation:
measure of angle C is half of the WXY arc
this means WXY×1/2=C
112°=1/2 WXY (cross production)
WXY=2×112°
WXY=224 °