Simplify the expression by using a double-angle formula. −2cos2π91

Sara bought a pair of pants that were on sale for 30 percent off of the original price. if the original price of the pants was $29, what was the sales price of the pants?

Enter the number of complex zeros for the polynomial function in the box. f(x) = x+ + 5x² +6

The length and width of a rectangle are consecutive even integers the area of the rectangle is 120 squares units what are the length and width of the rectangle