What is the mean for the following set of data? 5, 7, 8, 10, 12, 12

10
7
9
12

Express the following as a function of a single angle. cos(60) cos(-20) - sin(60) sin(-20)

Ann and betty together have $60 ann has $9 more than twice betty’s amount how much money dose each have

If you are dealt 4 cards from a shuffled deck of 52? cards, find the probability that all 4 cards are diamondsdiamonds.