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olga55 [171]
3 years ago
5

Erik is performing a marble experiment in math class. His teacher places an equal number of black, red, and white marbles in a b

ag. Then, Erik randomly takes out a marble, records the result, and puts the marble back in the bag. Each of the first four times Erik takes out a marble, he gets a black marble. A. What is the theoretical probability of Erik picking a black marble next time
Mathematics
1 answer:
olganol [36]3 years ago
5 0

Answer:

1/3

Step-by-step explanation:

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Answer:

<em>8</em><em>y</em><em>+</em><em>5</em><em>7</em><em>+</em><em>2</em><em>y</em><em>+</em><em>8</em><em>3</em><em> </em><em>=</em><em>1</em><em>8</em><em>0</em>

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<em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em>1</em><em>0</em><em>y</em><em> </em><em>=</em><em>1</em><em>8</em><em>0</em><em>-</em><em>1</em><em>4</em><em>0</em>

<em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em>1</em><em>0</em><em>y</em><em> </em><em>=</em><em>4</em><em>0</em>

<em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em>y</em><em> </em><em>=</em><em>4</em>

<em>CPH</em><em>=</em><em>2</em><em>y</em><em>+</em><em>8</em><em>3</em>

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