What is true about an acute angle?

3^4 =

Solve for x: (x-2)(x+3)=0

Solve for x: x^3=-1

What is the average of 1, 2, 3, 4,5?

x^2 - 4=?

Selections made with replacement are considered to be _______.

Tropical rainforests are not located in _______.

The ________ of a random variable corresponds to the notion of the mean, or average, for a sample.

Smoking and the episodes of lung cancer have a high correlation, but it does not prove ________.

Who, what, when, where, and why are elements of _____.