Abag contains 9 marbles 3 are green 4 are red and 2 are blue. bob chooses a marble at random and without putting it back chooses one at random. what is the probability that the first marble is blue and the second is green?

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

The probability that a student graduating from suburban state university has student loans to pay off after graduation is .60. if two students are randomly selected from this university, what is the probability that neither of them has student loans to pay off after graduation?

Darragh has a golden eagle coin in his collection with a mass of 13.551\,\text{g}13.551g. an uncirculated golden eagle coin has a mass of 13.714\,\text{g}13.714g.