Mathematics, 03.08.2021 14:00 NathanaelLopez
Sharmini has more than 50 hairpins. If she puts them in packs
of 7, she has 5 hairpins left. If she puts them in packs of 9, she has
6 hairpins left. How many hairpins does Sharmini have?
Answers: 3
Mathematics, 21.06.2019 17:20, kolbehoneyman
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 driver’s airplane. find var(y) for y as given in the problem
Answers: 3
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