4. Ethan types 1/5 of a page in 1/4 minute. How much time does it take him to type a full page?
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Using complementary events, considering a probability of drawing a red marble, the probability of not drawing a red marble is of
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They are mutually exclusive events which have the sum of their probabilities as 1.
In this problem, we consider that there is a probability of drawing a red marble, and since drawing a red marble and drawing a non-red marble are complementary events, we have that:
The probability of not drawing a red marble is of .
More can be learned about complementary events at brainly.com/question/9752956