anonymous
  • anonymous
Jane has 38 marbles of the same shape and size in a box. The colors and amounts of the marbles are shown below: 14 white marbles 9 gray marbles 15 blue marbles Without looking in the box, Jane takes out a marble at random. She then replaces the marble and takes out another marble from the box. What is the probability that Jane takes out a gray marble in both draws? 9 /38 x 8 / 37 = 72 / 1406 9 / 38 + 8 /37 = 637 / 1406 9 / 38 + 9 / 38 = 684 / 1444 9 / 38 x 9 / 38 = 81 / 1444
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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anonymous
  • anonymous
@Vocaloid @jim_thompson5910
jim_thompson5910
  • jim_thompson5910
how many gray marbles? how many marbles total?
anonymous
  • anonymous
9 gray and 38 total

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jim_thompson5910
  • jim_thompson5910
so the probability of picking 1 gray is 9/38 if we replace the marble, then the probability of picking 2 gray is (9/38)*(9/38) we just multiply the individual probability
jim_thompson5910
  • jim_thompson5910
just like the last one you dealt with
anonymous
  • anonymous
so my answer is D. ?
jim_thompson5910
  • jim_thompson5910
yeah
anonymous
  • anonymous
thanks!
jim_thompson5910
  • jim_thompson5910
you're welcome

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