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anonymous

  • one year ago

Find the probability of picking a blue marble and a yellow marble when 2 marbles are picked (without replacement)from a bag containing 4 blue and 5 yellow marbles.

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  1. anonymous
    • one year ago
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    Write a proportion

  2. anonymous
    • one year ago
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    how am i suppose to do that?

  3. anonymous
    • one year ago
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    Do you know how to write a proportion? It's two fractions equal to each other. If you need more help, go on Kahn Academy

  4. jim_thompson5910
    • one year ago
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    4 blue + 5 yellow = 9 total the probability of picking a blue marble on the first draw is (# of blue)/(# total) = 4/9

  5. jim_thompson5910
    • one year ago
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    no replacements are made, so after the first draw we have 9-1 = 8 marbles left over. There are still 5 yellow marbles the probability of picking yellow on the second draw is (# of yellow)/(# of marbles left) = 5/8

  6. anonymous
    • one year ago
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    what about the yellow

  7. jim_thompson5910
    • one year ago
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    multiply the two fractions to get the answer

  8. anonymous
    • one year ago
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    oh

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