For which values of x is the expression undefined?
9x – 36/x^2 + 7x – 18

Prove that the sum of two consecutive exponents of the number 5 is divisible by 30.if two consecutive exponents are 5n and 5n + 1, then their sum can be written as 30.

He that is measured at 220° is a reflex angle. the opposite angle is obtuse. find the measure of obtuse .

Draw a scaled copy of the circle using a scale factor of 2