-5x+3y=8 THAN X=9-10Y
-5(9-10y)+3y=8
-45-50y+3y=8
-47y=8 +45
-47y=53
y=-53/47
x=9-10y
x=9 - (10 * (-53/47))
x=9 + 530/47
x= (423 + 530 )/47
x= 953/47
[12(.3)+x(1)]/(12+x)=.4
3.6+x=4.8+.4x
.6x=1.2
x=2 qts
(though your radiator would still be short a quart for doing so :) )
The speed of the jet stream is 4.55 miles per hour
Step-by-step explanation:
Distance of one way trip= 3000 miles
The total distance of the round trip= 6000 miles
Total time = 11 hrs
Speed of the plane = 550 miles per hr
Speed = distance/time
= 6000/11
= 545.45 miles per hour
Speed of the plane = 545.45 + speed of the jet stream
550 = 545.45 + speed of jet stream
Speed of jet stream = 4.55 miles per hour
The speed of the jet stream is 4.55 miles per hour