an aircraft flew 5 hours with the wind. the return trip took 6 hours against the wind. if the speed of the plane in still air is
1 answer:
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Answer:
Option- one is correct.
The given system of equations have one solution that is (7,-21)
Step-by-step explanation:
Given system of equations are
Now to the solution:
To solve the given system of equations using substitution method.
That is substitute equation(1) in equation (2) we get
(here y=-3x)
(adding the like terms)
Therefore x=7
Now substitute x=7 in equation (1) we get
Therefore the solution is (7,-21)
Therefore Option- one is correct.
The given system of equations have one solution that is (7,-21)
