How to find a2 and b2 with only c2

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.

The following hormone had their receptors in the cell membrane except a-insulin b-tsh c-gh d- cortisol

Aubrey read 29 books and eli read 52 books what number is equal to the number of books aubrey read