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3 years ago

a bottle contains 12 red marbles and 8 blue marbles. A marble is chosen at random and not replaced. Then a second marble is chos

en at random. Determine the probability that the two marbles are not the same color.

Mathematics

1 answer:

patriot [66]3 years ago

5 0

$P(A)= \frac{12}{20} \cdot \frac{8}{19} + \frac{8}{20} \cdot \frac{12}{19}= \frac{12\cdot8}{20\cdot19} \cdot2=\frac{12\cdot4}{5\cdot19}= \frac{48}{95}$

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3 years ago

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krek1111 [17]

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Step-by-step explanation:

step 1

Find the number of people

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She ordered 1 pizza for every 4 people

using proportion

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step 2

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