True or false? shapes that have at least one right angle also have at least one pair of perpendicular sides. sorry i'm bad at angles

Elizabeth claims that the fourth root of 2 can be expressed as 2^m since (2^m)^n = 2. find the values of m and n for the case where elizabeth's claim is true.

Divide. –40 ÷ –5 a –8 b 200 c -200 d 8

For a function f(x), a) if f(7) = 22 then f^-1(22) = b) f^-1(f(c)) =