Answer:
x = 20
Step-by-step explanation:
ok so we know that one angle equals 90 degrees
90
x
2x
90 = x + 2x
90 = 3x
90 / 3 = 20
3x / 3 = x
20 = x
Answer:A
x= -9
7(x+2)=-49
divide both sides by 7
(x+2)=-7
subtract 2 from both dies
It's 90 because we'll make it equal
