edwardo99

07.11.2019 • 

Mathematics

Suppose that at another gas station the daily demand for regular gasoline is normally distributed with a mean of 1,000 gallons and a standard deviation of 100 gallons. the station manager has just opened the station for business and notes that there is exactly 1,100 gallons of regular gasoline in storage. the next delivery is scheduled later today at the close of business. the manager would like to know the probability that he will have enough regular gasoline to satisfy todays demands.

Ответ:

mikk33

19.05.2022

Mathematics

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(-x+9)(-x-9) - prefect square
(xy + x)(xy + x) - perfect square
(2x-3)(-3+2x) - not a perfect square
(16- x²)(x2 – 16) - not a perfect square
(4y? +25)(25+4y?) - not a perfect square

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