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Gnoma [55]
3 years ago
12

I really need help, I’m having a quiz tomorrow yet I struggle to understand the concept of this stuff...

Mathematics
1 answer:
uranmaximum [27]3 years ago
3 0

Here it goes:

a. Because you have four blue marbles out of the 12 total marbles, the probability is 4/12. YOU MUST SIMPLIFY down to 1/3.

b. There are 12 marbles in the bag right now, and the probability is 4/12, you must add some marbles. 1/10 multiplied by 4 is 4/40. There are 4 blue marbles right now, and 40 minus the 12 there are right now is 38, so you would need to add 38 non-blue marbles.

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