If cosA = -2/7 and A is in the 3rd quadrant, find the rest of the trig function

Simplify the expression and find the missing terms. the simplest form of has in the numerator and in the denominator.

1. which of the following algebraic equations is equivalent to ? x^n = a a^n = x a^x = n x^a = n 2. 16^1/4= 1/2 2 4 3. (-36)^1/2= -6 1/6 no real number 4. 8^2/3= 4 8 16√2 )^5/2= 7,776 1/7,776 no real number 6. m ^ the square root of a^2m simplified is: 7. the square root of 3^3 times the square root of 2 simplified and in radical form is:

Ming says that 0.24 > 1/4 because 0.24= 2/4. which best explains mings error