iilovejohnccena1022
11.12.2020 •
Mathematics
Carl drove from his home to the beach at an
average speed of 50 mph and returned home
along the same route at an average speed of
30 mph. His total driving time for the trip was
2 hours. Solving which of the following systems
of equations yields, x, the time it took for Carl
to drive to the beach and, y, the time spent for
the return trip?
Solved
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Ответ:
1st: 2x-3 2nd: 2x-1 3rd: 2x+1 4th: 2x+3
adding the above you get 8x=184