The length of a rectangle is three times the width. The area of the rectangle is 108 sq in. What is the width of the rectangle? 6 in. 9 in. 12 in. 36 in.

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

Amajor grocery store chain is trying to cut down on waste. currently, they get peaches from two different distributors, whole fruits and green grocer. out of a two large shipments, the manager randomly selects items from both suppliers and counts the number of items that are not sell-able due to bruising, disease or other problems. she then makes a confidence interval. is there a significant difference in the quality of the peaches between the two distributors? 95% ci for pw-pg: (0.064, 0.156)

Prove sin2a + cos2a - 1 / sin2a + cos2a + 1 = 1 - tana / 1 + cota