What is the area, in square centimeters, of the shape below? Express your answer as a fraction in simplest form.

Monthly water bills for a city have a mean of $108.43 and a standard deviation of $32.09. find the probability that a randomly selected bill will have an amount greater than $155, which the city believes might indicate that someone is wasting water. would a bill that size be considered unusual?

Use the distributive law to multiply. 3(4x + 5y + 6)

If cos(2x) = tan^2(y), show that cos(2y) = tan^2(x).