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anonymous

  • one year ago

help ;-; I hate school

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  1. anonymous
    • one year ago
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    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

  2. hybrik
    • one year ago
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    Set them equal to them

  3. hybrik
    • one year ago
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    self

  4. hybrik
    • one year ago
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    54x + 56 = 52x + 70

  5. hybrik
    • one year ago
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    then simplify, 2x=14

  6. hybrik
    • one year ago
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    x=7

  7. anonymous
    • one year ago
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    I think it is 7 hours, 420 miles but im not sure...

  8. hybrik
    • one year ago
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    Plug in 7 into the equation

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