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Mathematics 9 Online
OpenStudy (anonymous):

help ;-; I hate school

OpenStudy (anonymous):

The distances (y), in miles, of two cars from their starting points at certain times (x), in hours, are shown by the equations below: Car A: y = 52x + 70 Car B: y = 54x + 56 After how many hours will the two cars be at the same distance from their starting point and what will that distance be? 6 hours, 420 miles 6 hours, 434 miles 7 hours, 420 miles 7 hours, 434 miles

OpenStudy (hybrik):

Set them equal to them

OpenStudy (hybrik):

self

OpenStudy (hybrik):

54x + 56 = 52x + 70

OpenStudy (hybrik):

then simplify, 2x=14

OpenStudy (hybrik):

x=7

OpenStudy (anonymous):

I think it is 7 hours, 420 miles but im not sure...

OpenStudy (hybrik):

Plug in 7 into the equation

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