anonymous
  • anonymous
A bag has 5 red marbles, 6 blue marbles and 4 black marbles. What is the probability of picking a red marble, replacing it, and then picking a black marble?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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misty1212
  • misty1212
hi!!
misty1212
  • misty1212
how many marbles total?
anonymous
  • anonymous
15

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More answers

misty1212
  • misty1212
ok and haow many are red?
anonymous
  • anonymous
5
misty1212
  • misty1212
then what is the probability of picking a red one first?
anonymous
  • anonymous
1/3 simplified
misty1212
  • misty1212
right then you put the marble back, so there are still 15, how many are black?
anonymous
  • anonymous
4
misty1212
  • misty1212
so what is the probability of picking a black one ?
anonymous
  • anonymous
4/15?
misty1212
  • misty1212
yes
misty1212
  • misty1212
to get your answer, multiply
misty1212
  • misty1212
\[\frac{1}{3}\times \frac{4}{15}\]
anonymous
  • anonymous
oh. i didnt know to multiply that. thank you!!

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