Valerie is a big fan of country-western music and buys one cd every week. with tax, each cd costs her about $9. she also attends two concerts each year. the admission charge for each concert amounting to $40. how much is valerie spending per year on music entertainment?

If a || b and b | y, then ? a) x || y. b) x | a. c) a | y. d) a || y.

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Consider a bag that contains 220 coins of which 6 are rare indian pennies. for the given pair of events a and b, complete parts (a) and (b) below. a: when one of the 220 coins is randomly selected, it is one of the 6 indian pennies. b: when another one of the 220 coins is randomly selected (with replacement), it is also one of the 6 indian pennies. a. determine whether events a and b are independent or dependent. b. find p(a and b), the probability that events a and b both occur.