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anonymous

  • 5 years ago

if jim rides his bike to his office, he averages 12mph. if he drives his car, he averages 36mph. his time is 1/4 hours less then his time bicyling. how far is his office?

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  1. anonymous
    • 5 years ago
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    can someone help me on this one please :(

  2. anonymous
    • 5 years ago
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    So if he drives he takes an X amount of hours to get there and 1/4 X if he bikes.

  3. anonymous
    • 5 years ago
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    Woops sorry if he bikes he takes an X amount of time but when he drives he makes 1/4 X of that time.

  4. anonymous
    • 5 years ago
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    so both have something in common when you drive and bike. Do you know what that is?

  5. anonymous
    • 5 years ago
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    Well if you cant tell its how far they travel. Regardless if you use a car or a bike you travel a Y amount 1/4 X * 36 = Y X * 12 = Y you can do the rest. Tell me if you are still lost.

  6. anonymous
    • 5 years ago
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    ok so do you add like terms?

  7. anonymous
    • 5 years ago
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    Umm well want to know how far he travels which is Y but its really hard to do it with that X in there so what you can do is isolate X on each one and substitute

  8. anonymous
    • 5 years ago
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    so you will have X = whatever for equation 1 X = whatever for equation 2 and you get whatever for equation 1= whatever for equation 2

  9. anonymous
    • 5 years ago
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    ok... lol im sorry im just really bad at these kind of problems

  10. anonymous
    • 5 years ago
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    ok isolate X like I said and write it down

  11. anonymous
    • 5 years ago
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    so do i multiply w/ -1/4? (the second prob.)

  12. anonymous
    • 5 years ago
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    .. i guess im just really confused...

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spraguer (Moderator)
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