Solve tan^2 x / 2 - 2cos^2 x-1

In a 10% sale a jumper costs £36. How much does it usually cost? A. 40 B. 39.60 C. 32.40 D. 360

Use emlimination to solve the system x-5y=20 and x+3y=-4 for x

Simplify the ratio 12:2 ... ?

Patrick pizza parlor is famous for its giant circular pizza, which has an area of 1519.76 square inches. Approximately what is the diameter of the giant pizza. Use 3.14 for pi

A farmer has 5 times as many cows as horses. The farmer only has cows and horses, and he has 168 animals. How many cows does he have?

8 less than a number n is less than 11

9a - [7 - 5 (7a - 3) ]

One eighth of tonys books are mystery books he has 3 mystery books how many books dose tony have in all?

If the mean of the following distribution is 91 and sum of frequencies is 150 find x and y

Find the value of the spring constant for the spring in trial i. use 0.367 s for the value of the period. the mass of the suspended block is 0.400 kg. enter your answer in n/m with three significant figures.