What is the first step in subtracting 23 3/7 - 14 4/7? a) make 4/7 improper. b) make 23 3/7 improper. c) simplify. d) find the lcd.

Find cot x if sin x cot x csc x = √2

Ibeg you to me 20. a reaction produces 4.93 l of oxygen, but was supposed to produce 1 mol of oxygen. what is the percent yield?

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.