vinnyl3 vinnyl3

12-03-2017
Mathematics

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12. If Zoey has a bag of marbles containing 18 red marbles, how many blue marbles should she add to the bag so that the probability of her drawing a blue marble from the bag is \frac{1}{4} 1 4 ?

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emicloe emicloe

12-03-2017

1/44/25/63/6/89/78688788

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