Mathematics, 08.01.2021 04:40 dontworry48
A person draws a card from a hat. Each card is one color, with the following probabilities of being drawn: 1/15 for blue, 1/25 for green, 1/5 for pink, and 1/20 for black. What is the probability of pulling a black or pink card, written as a reduced fraction?
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Serena is making an experiment. for that, she needs 20 grams of a 52% solution of salt. she has two large bottles of salt water: one with 40% and the other with 70% of salt in them. how much of each must she use to make the solution she needs? i am in need of
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What is the surface area of a cube with the volume of 729 ft?
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A person draws a card from a hat. Each card is one color, with the following probabilities of being...
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