realpcy7515
10.04.2021 •
Mathematics
An instructor graded 200 papers and found 80 errors. If a paper is picked at random, find the probability that it will have exactly 4 errors.
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Ответ:
Step-by-step explanation:
First we have to break the 99 up into 9 and 11. Since 9 is a perfect square, it'll come out perfect. Then for the x to the power of 17 we will make the exponent into an even number by taking one x away.
So after we have this simplify the perfect square and don't touch the non-perfect ones.
So that's it!