Quantcast

Got Homework?

Connect with other students for help. It's a free community.

  • across
    MIT Grad Student
    Online now
  • laura*
    Helped 1,000 students
    Online now
  • Hero
    College Math Guru
    Online now

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

katlin95 Group Title

On a map, the key states that 1 inch equals 10 miles. If you want to calculate how many miles is equivalent to 7 inches, which proportion would you use? A.the fraction 10 inch over 1 miles equals the fraction 7 inches over z miles B. the fraction 1 inch over 10 miles equals the fraction z inches over 7 miles C. the fraction 1 inch over 10 miles equals the fraction 7 inches over z miles D. the fraction z inch over 10 miles equals the fraction 7 inches over 1 miles

  • one year ago
  • one year ago

  • This Question is Closed
  1. katlin95 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    @e.cociuba

    • one year ago
  2. katlin95 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    |dw:1364426784027:dw| find the mRF if m angle FNR= 38 degrees

    • one year ago
  3. katlin95 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    A. 284 degrees B. 142 degrees C. 38 degrees D. 76 degrees @jim_thompson5910 can u help with these two?

    • one year ago
  4. jim_thompson5910 Group Title
    Best Response
    You've already chosen the best response.
    Medals 2

    Similar example: if 1 inch = 50 miles then 3 inches on a map would mean... 1 inch/50 miles = 3 inches/x miles or just 1/50 = 3/x

    • one year ago
  5. jim_thompson5910 Group Title
    Best Response
    You've already chosen the best response.
    Medals 2

    so you can use that to find the actual distance x that 3 inches represents on a map

    • one year ago
  6. katlin95 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    okay for the first one I got B as my answer and the second question I got C

    • one year ago
  7. jim_thompson5910 Group Title
    Best Response
    You've already chosen the best response.
    Medals 2

    why B for the first one?

    • one year ago
  8. jim_thompson5910 Group Title
    Best Response
    You've already chosen the best response.
    Medals 2

    you know the distance on the paper map, it's 7 inches it's not z inches

    • one year ago
  9. jim_thompson5910 Group Title
    Best Response
    You've already chosen the best response.
    Medals 2

    z is the unknown distance in real life from point A to point B that the 7 inches represents on the paper map

    • one year ago
  10. katlin95 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    oh haha I ment A sorry!

    • one year ago
  11. jim_thompson5910 Group Title
    Best Response
    You've already chosen the best response.
    Medals 2

    |dw:1364427190413:dw|

    • one year ago
  12. jim_thompson5910 Group Title
    Best Response
    You've already chosen the best response.
    Medals 2

    i meant to write z miles, not z inches

    • one year ago
  13. jim_thompson5910 Group Title
    Best Response
    You've already chosen the best response.
    Medals 2

    but hopefully you get the idea

    • one year ago
  14. jim_thompson5910 Group Title
    Best Response
    You've already chosen the best response.
    Medals 2

    the scale is this |dw:1364427313903:dw|

    • one year ago
  15. katlin95 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    oh first on is C huh?

    • one year ago
  16. jim_thompson5910 Group Title
    Best Response
    You've already chosen the best response.
    Medals 2

    put the two side by side to get |dw:1364427383477:dw|

    • one year ago
  17. katlin95 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    yep so its C!:)

    • one year ago
  18. jim_thompson5910 Group Title
    Best Response
    You've already chosen the best response.
    Medals 2

    yep, C it is

    • one year ago
  19. jim_thompson5910 Group Title
    Best Response
    You've already chosen the best response.
    Medals 2

    1 inch/10 miles = 7 inches/z miles or just 1/10 = 7/z

    • one year ago
  20. katlin95 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    alright how about second one?

    • one year ago
  21. jim_thompson5910 Group Title
    Best Response
    You've already chosen the best response.
    Medals 2

    we want arc RF, so we need to find central angle FDR

    • one year ago
  22. jim_thompson5910 Group Title
    Best Response
    You've already chosen the best response.
    Medals 2

    to find the central angle, you use the inscribed angle theorem

    • one year ago
  23. jim_thompson5910 Group Title
    Best Response
    You've already chosen the best response.
    Medals 2

    this central angle here |dw:1364427601352:dw|

    • one year ago
  24. jim_thompson5910 Group Title
    Best Response
    You've already chosen the best response.
    Medals 2

    is equal to 2 times any inscribed angle which cuts off the same arc

    • one year ago
  25. katlin95 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    alright so my answer would be D

    • one year ago
  26. jim_thompson5910 Group Title
    Best Response
    You've already chosen the best response.
    Medals 2

    yep 76

    • one year ago
  27. katlin95 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    thanks!

    • one year ago
  28. jim_thompson5910 Group Title
    Best Response
    You've already chosen the best response.
    Medals 2

    yw

    • one year ago
    • Attachments:

See more questions >>>

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.