Alangs
06.05.2021 •
Mathematics
A biologist is studying the weights of female polar bears in the Arctic and finds that the mean weight is 179 kg with a standard deviation of 63 kg. Assume weights are normally distributed. What is the weight of a polar bear at the 30th percentile?
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Ответ:
x^2-81
Step-by-step explanation:
(x-9)(x+9)
x*x= x^2
-9*9= -81
Add values together.
x^2-81