Answer:
10
Step-by-step explanation:
By using intersecting chord theorem:
NH.HT=MH.HY
(x+20)*8=12*20
x+20=12*20/8
x+20=240/8
x+20=30
x=30-20
x=10
Answer:
B. -10.0
Step-by-step explanation:
-10.0² = -100
thus= -10.0 is the closest to -102 (square root)
Answer:
G
Step-by-step explanation:
Using the rule of exponents
= 
Consider the left side
=
, then
= n²
Since bases on both sides are equal, equate the exponents
x - y = 2 → G