I don’t understand plz help me
...
Answers: 2
Mathematics, 21.06.2019 16:50
The parabola y = x² - 4 opens: a.) up b.) down c.) right d.) left
Answers: 1
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 driver’s airplane. find var(y) for y as given in the problem
Answers: 3
Mathematics, 21.06.2019 19:00
The fence around a quadrilateral-shaped pasture is 3a^2+15a+9 long. three sides of the fence have the following lengths: 5a, 10a-2, a^2-7. what is the length of the fourth side of the fence?
Answers: 1
English, 07.12.2021 23:30
Mathematics, 07.12.2021 23:30
Social Studies, 07.12.2021 23:30
Social Studies, 07.12.2021 23:30
Mathematics, 07.12.2021 23:30
History, 07.12.2021 23:30
Chemistry, 07.12.2021 23:30
Mathematics, 07.12.2021 23:30
Computers and Technology, 07.12.2021 23:30