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3 years ago

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an urn contains 10 blue marbles and 8 yellow marbles a marble is drawn and dropped back into the urn. Then a second marble is dr

awn and dropped back into the urn both marbles are yellow if another marble is drawn. what is the probability that it will be blue

1 answer:

Sunny_sXe [5.5K]3 years ago

6 0

Answer:

80/729

Step-by-step explanation:

8/18x8/18x10/18=640/5832

80/729

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2 years ago

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Step-by-step explanation:

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Setting up the equation.

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$s(t) =16t^2+32t$

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$215=16t^2+32t$

Solving for the time t.

From the previous equation we can move all terms in one side to get

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At this point we can solve for t using quadratic formula.

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Using a calculator we get

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