A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

anonymous

  • one year ago

please help me i will medal and fan

  • This Question is Closed
  1. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    It took Jimena 89 minutes to run a 15-kilometer race last weekend. If you know that 1 kilometer equals 0.621 mile, how many minutes did it take Jimena to run 1 mile during the race? Round your answer to the nearest hundredth. 3.68 minutes 9.55 minutes 9.88 minutes 24.15 minutes

  2. MichaelAlex292
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 3

    First, you would need to know how many minutes it took her to run 1 kilometer. This would be set up in a proportion: \[\frac{ 15 }{ 89 } = \frac{ 1 }{ x }\] Solve for x to find how many kilometers she ran in 1 minute. Then transfer it to minutes per mile. Do you know how to do that?

  3. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    u would cross multiply?

  4. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    okay so jimena's rate is 15 km/ 89 minutes convert this to 0.16853932584 km/ min which is equal to 0.16853932584(.621) miles/min set that [rate] equal to d/t so 0.16853932584(.621)=d [1 mile]/t solve for t

  5. MichaelAlex292
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 3

    To solve for x, yep

  6. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    I am sorry, but I don't know how to do that... could you help?

  7. MichaelAlex292
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 3

    To solve proportions, you cross-multiply by multiplying the terms that are diagonal to each other.

  8. MichaelAlex292
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 3

    So what would that be?

  9. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    89/15x?

  10. MichaelAlex292
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 3

    Yes! Now solve for x

  11. Pawanyadav
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    She takes 89 min to cover (15×0.62)miles So for 9 miles time is 89min. For 1mile time taken is 89/9minutes =9.88min. (Approximately)

  12. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    5.9333333

  13. MichaelAlex292
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 3

    Yep, now multiply it by the conversion of km to miles to find the answer (Hint: Multiply it by 0.621)

  14. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    9.88?? (rounded)

  15. MichaelAlex292
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 3

    Hold on, I screwed up. You have to convert the 15 km into miles using the conversion given.

  16. MichaelAlex292
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 3

    Do you know how to do that?

  17. MichaelAlex292
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 3

    Once you find how many miles is in 15km, you set up the same proportion we did earlier, except swap the 15 with the new value that you get

  18. MichaelAlex292
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 3

    Then solve for x

  19. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    so what do i end up with? 9.88 is not the answer. @MichaelAlex292

  20. MichaelAlex292
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 3

    Its not 9.88, its actually 9.55. Sorry I screwed up :l

  21. MichaelAlex292
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 3

    Look above

  22. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    its alright... thanks!

  23. MichaelAlex292
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 3

    No problem :)

  24. Not the answer you are looking for?
    Search for more explanations.

    • Attachments:

Ask your own question

Sign Up
Find more explanations on OpenStudy
Privacy Policy

Your question is ready. Sign up for free to start getting answers.

spraguer (Moderator)
5 → View Detailed Profile

is replying to Can someone tell me what button the professor is hitting...

23

  • Teamwork 19 Teammate
  • Problem Solving 19 Hero
  • You have blocked this person.
  • ✔ You're a fan Checking fan status...

Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.

This is the testimonial you wrote.
You haven't written a testimonial for Owlfred.