Solve u^2 = -4, where u is a real number. Simplify your answer as much as possible.
1 answer:
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Answer:
9 red tiles
Step-by-step explanation:
Total number of tiles:
Total number of red tiles:
Probability of getting red in one draw:
<em>This means that you would expect to get red or 30% of the times.</em>
<em>Hence, when you draw tiles 30 times from the bag, you would expect red to be picked 30% of 30 times. This is:</em>
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So, you would expect to draw a red tile from the bag 9 times.