With this problem -9+(15+14)= (-9+15)+14 what property is this.

Brainlest answer can you find the area and circumference of a circle given the radius or diameter? if its yes or no explain why

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.

Use sigma notation to represent the following series for 9 terms.