A bag contains 3 red, 3 blue, and 3 yellow marbles. You toss a coin and then draw a marble out of the bag at random. What is the probability that the coin shows tails and the marble is blue?

Holt McDougal Larson Algebra 1 Common Core Edition page ep 12 number 2

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In the case of the coin, one side is heads and the other is tails. Since all events must equal 1-that means that the probability of getting a heads is 1/2 and the probability of getting tails is 1/2.

The bag of marbles contains a total of 9 marbles

Probability so

the probability of drawing a red is 3/9

the probability of drawing a blue is 3/9

the probability of drawing a yellow is 3/9

IF the marbles are replaced after being drawn which is the assumption.