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Mathematics, 21.06.2019 17:20
Four airplanes carrying a total of 400 passengersarrive at the detroit airport. the airplanes carry, respectively,50, 80, 110, and 160 passengers.a) one of the 400 passengers is selected uniformly at random.let x denote the number of passengers that were on theairplane carrying the randomly selected passenger. find var(x)for x as given in the problemb) one of the 4 airplane drivers is also selected uniformly atrandom. let y denote the number of passengers on the chosen driverβs airplane. find var(y) for y as given in the problem
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Mathematics, 21.06.2019 22:00
Jayne is studying urban planning and finds that her town is decreasing in population by 3% each year. the population of her town is changing by a constant rate.true or false?
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Mathematics, 22.06.2019 01:00
Given the numbers c = β3 and d = 4, which statement is true? a. |βc| = 3 and |βd| = β4 b. |βc| = 3 and β|d| = β4 c. β|c| = β4 and β|d| = 3 d. |βc| = 3 and β|d| = 4
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