Cos2x = . Check all that apply. A.) sin^2x - cos^2 x
B.) 1 - 2 sin^2 x
C.) 2cos^2 x - 1
D.) 1 - 2cos^2 x

What numbers are included in the set of integers? what numbers are not included?

Awoman has 14 different shirts: 10 white shirts and 4 red shirts. if she randomly chooses 2 shirts to take with her on vacation, then what is the probability that she will choose two white shirts? show your answer in fraction and percent, round to the nearest whole percent.

$5400 is? invested, part of it at 11? % and part of it at 8? %. for a certain? year, the total yield is ? $522.00. how much was invested at each? rate?