(-3x+ Oy-2z = 6 What is the determinant of the coefficient matrix of the system
9x+Oy + 5z = 7 ?
Bx+Oy- 12z=3
A. 0
B. 3
C. 6
D. 7

The verbal translation for the difference of m and 7 increased by 15

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

Which ordered pair is a solution to the system of linear equations? 2x + 3y= 6 –3x + 5y = 10