gracedavis4560 gracedavis4560

27-12-2022
Mathematics

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suppose i have a bag with 12 slips of paper in it. some of the slips have a 2 on them, and the rest have a 7 on them. if the expected value of the number shown on a slip randomly drawn from the bag is $3.25$, then how many slips have a 2?

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