Which expression completes the identity cos u - cos v = ?

Which of the following ratios is equivalent to 1/cos?

How to round 4.19 to the nearest whole number

Richard needs 18 cups of flour to make 78 pancakes. How many pancakes can Richard make with 12 cups of flour?

The hight of the water in an above ground is 3 feet. The pool needs to be drained. As the water changes at a rate of - 1/2 inch per mintues it will take to drain the pool

How many terms does the binomial expansion of (x^2+7y) ^9

Jake recorded a special album in honor of mother's da. His mom was so excited she purchased 40% of the copies in the store. She has 80 copies of the cd. How many cd did the store have for sale

a recipe for french toast that serves 6 calls for 3/4 cup of granulated sugar, 1 cup of evaporated milk, 1/3 teaspoon of vanilla, and 12 thick slices of French bread. How much sugar do you need to feed 12 people? (Black)

What is the expression written using each base only once? (-4) ^-6 * (-4) ^7 A. 4^13 B.-4 C. 13 D. 1 Find the simplified form of expression. Give your answer in scientific notation. (3 x 10^6) (8 x 10^-4) A. 1.1 x 10^3 B. 2.4 x 10^3 C. 1.

A meteorologist forecasted that Monday's hight temperature would be 76F. On Monday, the temperature reached 80F. What is the percent error in the meteorologist's forecast for Monday?

Show all work to factor x4 - 5x2 + 4 completely.