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anonymous
 one year ago
Peter is giving marbles to some children at a carnival. He has 5 red marbles, 4 blue marbles, and 3 yellow marbles. If Peter selects a marble randomly without looking, what is the probability that he will give a blue marble to the first child and then a yellow marble to the second child?
4/12 + 3/12 = 7/12
4/12 + 3/11 = 80/132
4/12 * 3/12 = 12/144
4/12 * 3/11 = 12/132
anonymous
 one year ago
Peter is giving marbles to some children at a carnival. He has 5 red marbles, 4 blue marbles, and 3 yellow marbles. If Peter selects a marble randomly without looking, what is the probability that he will give a blue marble to the first child and then a yellow marble to the second child? 4/12 + 3/12 = 7/12 4/12 + 3/11 = 80/132 4/12 * 3/12 = 12/144 4/12 * 3/11 = 12/132

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0because he would have taken a marble out which gives him 3/11

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Wouldn't it be B if its 3/11?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0oh, ya good catch, i didnt see the * symbol

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0You had it right the first time it is D

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0why multiply instead of divide?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0have you learn about tree diagrams?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0that will help explain why we are multiplying and not adding
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