1+cosx/1-cosx=tan^2x/(sec^2-1)^2

Suppose that the price p (in dollars) and the weekly sales x (in thousands of units) of a certain commodity satisfy the demand equation 4p cubedplusx squaredequals38 comma 400. determine the rate at which sales are changing at a time when xequals80, pequals20, and the price is falling at the rate of $.20 per week.

If jaime wants to find 60% of 320, which table should he use?

Which of the following shows the length of the third side, in inches, of the triangle below