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anonymous

  • one year ago

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

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  1. anonymous
    • one year ago
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    @Mehek14 @

  2. anonymous
    • one year ago
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    @texaschic101

  3. anonymous
    • one year ago
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    or anyone lol

  4. anonymous
    • one year ago
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    @_greatmath7

  5. Mehek14
    • one year ago
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    same thing as the other question

  6. Mehek14
    • one year ago
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    substitute 52x + 70 for y in the second equation for y

  7. Mehek14
    • one year ago
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    \(52x + 70 = 54x + 56\) subtract 54x - 52x = 2x subtract 70 - 56 = 14 \(14=2x\) divide 14/2 = 7 \(7=x\)

  8. Mehek14
    • one year ago
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    so we got ts 7 hours not we need to find how many miles

  9. anonymous
    • one year ago
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    ok

  10. anonymous
    • one year ago
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    C or D

  11. Mehek14
    • one year ago
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    \(y=52*7+70\\52*2=364\\364+70=434\)

  12. Mehek14
    • one year ago
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    so 7 hrs, 434 mi D

  13. anonymous
    • one year ago
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    alright hey im not trying to be annoying but i have more questions.. ugh it kinda sucks tho like i feel like im bothering you

  14. Mehek14
    • one year ago
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    nah it's ok

  15. anonymous
    • one year ago
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    yay thankss ill post and tag you if i have more to give you more medals

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