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

britbrat4601 Group Title

Which three lengths could be the lengths of the sides of a triangle? A. 12 cm, 5 cm, 17 cm B. 10 cm, 15 cm, 24 cm C. 9 cm, 22 cm, 11 cm D. 21 cm, 7 cm, 6 cm

  • one year ago
  • one year ago

  • This Question is Closed
  1. geoffb Group Title
    Best Response
    You've already chosen the best response.
    Medals 5

    Remember that the sum of the two shorter legs have to be greater than the longest leg. If they sum to less, they can't even touch. If they sum to the same, they are on the same line as the long leg, and it is not a triangle.

    • one year ago
  2. britbrat4601 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    so b?

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

    Yes.

    • one year ago
  4. britbrat4601 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    thanks for your help!

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

    A would just be a line, and C and D could not connect to form a triangle.

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

    No problem. :)

    • one year ago
  7. vitorfleite Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    Everyone can be a triangle, scalene triangles.

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

    @vitorfleite No they can't. Draw them out on a piece of paper and you'll see.

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

    I draw a triangle with the lenghts of C, now.

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

    |dw:1353900288402:dw| You can't make the 12 and 5 cm lines into a triangle. The only way they can connect is as a straight line.

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

    |dw:1353900366005:dw| The two shorter lines cannot connect.

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

    In C and D, the shorter lines don't even add up to the big line. It's not mathematically possible for two short lines to create a triangle with a long line unless the two short lines sum to greater than the long line.

    • one year ago
  13. vitorfleite Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    I understood now, I did wronggg.

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

    No worries. I made the exact same false assumption on here a few months ago. :)

    • 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.