Johny boi has a bag of marbles that contains 12 red marbles, 20 green marbles, and 17 blue marbles if johny boi pulls one marble out of the bag, what is the probability that it will not be red? that is, p(not red)?

The serenity and the mystic are sail boats. the serenity and the mystic start at the same point and travel away from each other in opposite directions. the serenity travels at 16 mph and the mystic travels at 19 mph. how far apart will they be in 3 hours?

Given the median qr and trapezoid mnpo what is the value of x?

Given sin28.4=.4756, cos28.4=.8796, and tan28.4=.5407 find the cos of 61.6