Tim bought 5 new baseball trading cards to add to his collection. the next day his dog ate half of his collection. there are now only 27 cards left. how many cards did tim start with?

Christina can paint 420 square feet in 105 minutes. which unit rate describes the scenario?

Ineed with number 6 , explain how to get 1978

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.