Simplify cos^2x-1/1-cos^2x

There are 16 boys in the school choir. the choir has 88 members in all. which equation, when solved, will show how many girls are in the school choir?

2) If Jenny wants to make 80 cups of punch, how many cups of each ingredient will she need?

Lin and pazi each think of a number lins number is 7 more than pazis number the sum of the two numbers is 49 what is pazi number

The area of a triangle is 228 m squared and the height is 19 m, what is the base?

How do you calculate elapsed time?

Jeremy made a list of his expenses for the month. Which should be added to find the total for his savings? Choose exactly two answers that are correct. A. electric bill B. eating out C. emergency fund D. water bill E. car insurance F. groceries G.

What is the slope of the line represented by the equation 2x + 3y = - 12? A. - 3/2 B. - 2/3 C. 2/3 D. 3/2

What is the correct answer for : - 1/5 (x-25) = 7

runs 5 laps in 30 minutes, denise runs 4 laps in 20 minutes, paola runs 6 laps in 40 minutes. if they run at a constant rate, who is the fastest runner?

Megan has 7 coins that make one pound. The coins are of only two different kinds. What are the 7 coins?