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Mathematics, 24.04.2020 08:56, jeancarlo1107
Anna wants to make 30 mL of a 60% salt solution by mixing together a 72% salt solution and a 54% salt solution . How much of each solution must she use?
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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.
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