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anonymous

  • one year ago

What is the value of time, t, for the given values of distance,d, and rate r? D=315mi, r=45mi/h A. 7h B. 7mi C. 14174 h D. 14174 mi

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  1. anonymous
    • one year ago
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    @shadow13 @gabby_2624

  2. mathstudent55
    • one year ago
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    \(rate~of~speed = \dfrac{distance}{time} \)

  3. shadow13
    • one year ago
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    its between b and c i believe

  4. mathstudent55
    • one year ago
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    \(r = \dfrac{d}{t} \) \(t = \dfrac{d}{r} \)

  5. mathstudent55
    • one year ago
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    The question is what is the time. The 4 choices have units of miles or hours. A time must be in hours, not miles, so the only possible answers are A. and C. Use the equation above to find out which one is correct.

  6. mathstudent55
    • one year ago
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    time = distance divided by rate

  7. anonymous
    • one year ago
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    @mathstudent55 so i think that the answer would be A

  8. shadow13
    • one year ago
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    its equals 7 h so yes u ar crecet

  9. anonymous
    • one year ago
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    ok thanks @shadow13

  10. shadow13
    • one year ago
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    welcome and this is how i got it Okay so you are traveling at 45 miles an hour and covering 315 miles. Let's divide 315 by 45 to see how many hours we spent. 315/45=7 You spent 7 hours

  11. shadow13
    • one year ago
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    anything else my friend

  12. mathstudent55
    • one year ago
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    Yes, the answer is 7 h.

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