Which expression represents the determinant of det(A) = (2)(9) – (1)(3)
det(A) = (2)(9) + (1)(3)
det(A) = (2)(3) – (1)(9)
det(A) = (2)(3) + (1)(9)

answer: dead jah

step-by-step explanation:

bullet + jah= dead jah

x + y = 90 5x – 10y = 90 90 – 10y = 5x 90 + 10y = 5x

step-by-step explanation:

last month maria hiked the 5-mile mountain trail a number of times and she hiked the 10-mile canal trail several times. let x represent the number of times she hiked the 5-mile trail, and let y represent the number of times she hiked the 10-mile trail. if she hiked a total of 90 miles, which equation can be used to find the number of times maria hiked each trail? x + y = 90 5x – 10y = 90 90 – 10y = 5x 90 + 10y = 5x