Answer:
Step-by-step explanation:
let the speed of one plane=x mph
speed of other plane=x+120 mph
x×1.5+(x+120)×1.5=1620
(x+x+120)×1.5=1620
(2x+120)×1.5=1620
3x+180=1620
3x=1620-180
3x=1440
x=480
speed of one plane=480 mph
speed of second plane=480+120=600 mph
Answer:
4
Step-by-step explanation:
plug in 0 for x in the equation and solve
-2 to 0 is 4 because -2 × -2 is 4
Answer:
x=3 and y=-4
(3,-4)
Step-by-step explanation:
I searched it up :/
so 15% off is 149.85 which makes it 849.85 then you add sales tax which is 79.92 and your cost is 929.07