anonymous
  • anonymous
Andrea's change purse contained 8 quarters, 9 dimes, and 8 nickels.If andrea chose 2 coins randomly without replacing them in her purse,what is the probability that she chose 2 dimes?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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anonymous
  • anonymous
flutter you
anonymous
  • anonymous
uhm, excuse me. but can i get an explanation on this problem,please really stuck on this.
swissgirl
  • swissgirl
ok so we have 25 coins altogether

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swissgirl
  • swissgirl
and we have 9 dimes
anonymous
  • anonymous
okay im following
swissgirl
  • swissgirl
So the first time we choose a coin the probability that it will be a dime is 9/25 correct?
anonymous
  • anonymous
Yeah?
swissgirl
  • swissgirl
ya there are 25 coins altogether and 9 dimes so the probability that it will be a dime is dimes/total amt of coins = 9/25
swissgirl
  • swissgirl
The second time we choose a coin
anonymous
  • anonymous
okay i get you
swissgirl
  • swissgirl
there are only 24 coins left cuz we picked a dime
anonymous
  • anonymous
okay
swissgirl
  • swissgirl
so there are 24 coins and 8 dimes so the probabiity we will choose a dime is 8/24
swissgirl
  • swissgirl
So altogether the probability that we will choose 2 dimes is 9/25*8/24
anonymous
  • anonymous
so the answer would be 3/25, right?
swissgirl
  • swissgirl
yup :)
anonymous
  • anonymous
Omg! Thank You So Much!(:

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