Rewrite with only sin x and cos x.

sin 2x - cos x

2 sin x cos2x

sin x

cos x (2 sin x - 1)

2 sin x

The ratio of the number of adults to students at the prom has to be 1:10. If there are 477 more students than adults how many adults have to attend?

The sum of 57 and a number b

Divide 56 pens into 2 groups so the ratio is 7:8

Is a 20% decrease followed by a 40% increase less than the original

Lindsey and menon have 1,240 stickers. menon has 4 times as many stickers as lindsey. menon decides to have 6 stickers on each page of an album. how many stickers does menon have?

A will states that nine tenths 9 10 of an estate is to be divided among relatives. Of the remaining estate, one half 1 2 goes to the American Cancer Society. What fraction of the estate goes to the American Cancer Society?

Find the value 9x10^4

It takes Dan 32 minutes to complete 2 pages of math homework. At this rate, how many pages does he complete in 200 minutes?

Most Americans throw away about 1,365 pounds of trash each year. Is it reasonable to estimate that Americans throw away over 10,000 pounds of trash in 5 years? Explain.

Blanca has $38,800 in a savings account. The interest rate is 9% per year and is not compounded. How much interest will she earn in 9 months? simple interest