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svet-max [94.6K]
3 years ago
9

there are 7 blue and 2 red marbles in a bag. what is the probability of getting two blue marbles in a row? express as a fraction

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Mathematics
1 answer:
FromTheMoon [43]3 years ago
7 0

Answer:

7/12

Step-by-step explanation:

7/9 times 6/8 (which is simplified to 3/4) comes out simplified to 7/12. You would do this because you have 7 blue marbles and 9 total marbles at first, then you take one of each away. You want to find the probability, so you multiply both fractions

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irina [24]

Answer:

259 students

Step-by-step explanation:

First, find how many will check out science fiction books

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Subtract these amounts from 350

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So, she should expect 259 students not to check out science fiction and sports books

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3 years ago
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The question is incomplete :

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