4x+2y-6z-x-3y+2z= 3x-y-4z
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70x + 490=1050
-490 -490\
70x= 560
divide both sides by 70
x = 8
8 passengers
Answer:
d) (-3/2, -1/2)
Step-by-step explanation:
The midpoint (M) between two given points is the average of their coordinate values:
M = (A + B)/2 = ((-8, 1) +(5, -2))/2 = (-3, -1)/2
M = (-3/2, -1/2) . . . . . matches choice D