A quantity x varies directly with y and inversely with z. Which expression represents the constant of variation, k? A: StartFraction x z Over y EndFraction
B: StartFraction x y Over z EndFraction
C: StartFraction z Over x y EndFraction
D: StartFraction y Over x z EndFraction

Abouncy ball is released from a certain height. on the first bounce, it travels 32cm. with each subsequent bounce, it travels 9/10 the distance of the previous bounce. what is the total distance that the ball has traveled when it completes its 25th bounce?

The surface area of the triangular prism is .

Suppose you just purchased a digital music player and have put 8 tracks on it. after listening to them you decide that you like 4 of the songs. with the random feature on your player, each of the 8 songs is played once in random order. find the probability that among the first two songs played (a) you like both of them. would this be unusual? (b) you like neither of them. (c) you like exactly one of them. (d) redo () if a song can be replayed before all 8 songs are played.