Two parallel lines are intersected by another line as shown. What is the measure of ∠2?

A.
65°
B.
115°
C.
130°
D.
155°

The radical equation 2+√2x-3 = √x+7 has a solution set [x= a0} and an extraneous root x = a1.

F(x) = x2 − 9, and g(x) = x − 3 f(x) = x2 − 4x + 3, and g(x) = x − 3 f(x) = x2 + 4x − 5, and g(x) = x − 1 f(x) = x2 − 16, and g(x) = x − 4 h(x) = x + 5 arrowright h(x) = x + 3 arrowright h(x) = x + 4 arrowright h(x) = x − 1 arrowright

The radius of the earth is two times the radius of the moon. what fraction of the volume of the earth is the volume of the moon?