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Mathematics, 21.06.2019 15:00
Little’s law firm has just one lawyer. customers arrive randomly at an average rate of 6 per 8 hour workday. service times have a mean of 50 minutes and a standard deviation of 20 minutes. how long does a customer spend at little’s law firm on average?
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Afarmer has 5 times as many cows as pigs. the farmer only has cows and pigs, and he has 168 animals. how many cows does he have?
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Mathematics, 22.06.2019 03:30
What is the value of x in the equation 1/5x - 2/3y = 30 , when y = 15
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