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

Sgstudent

The perimeter of the triangle with sides 5cm , 6cm and x cm is less than 18cm. Given that the sum of any two of the sides is always greater than the third side, find the range of values of x.

  • one year ago
  • one year ago

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

    5 + 6 + x < 18 11 + x < 18 x<7 im not quite sure though :)

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

    That's what i did and it's WRONG.

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

    hmmm why?

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

    answer is 1<x<7

    • one year ago
  5. syhna
    Best Response
    You've already chosen the best response.
    Medals 1

    how'd you get it? i dont seem to understand something about it

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

    Because you and i made the same mistake, we only read the first part of the question and "ignore" the second sentence.

    • one year ago
  7. itsmylife
    Best Response
    You've already chosen the best response.
    Medals 1

    5+6+x<18 11+x<18 x<7

    • one year ago
  8. itsmylife
    Best Response
    You've already chosen the best response.
    Medals 1

    so it must be 1<x<7

    • one year ago
  9. itsmylife
    Best Response
    You've already chosen the best response.
    Medals 1

    @Sgstudent keep rocking

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

    yea it must be 1<x<7

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

    how did we get that?

    • one year ago
  12. syhna
    Best Response
    You've already chosen the best response.
    Medals 1

    so 5 +6 > x ??

    • one year ago
  13. itsmylife
    Best Response
    You've already chosen the best response.
    Medals 1

    i showed ya up there

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

    why is it 1<x<7 and not x<7 ??

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

    sum of three sides is less than 18 5+6+x<18 subtract 11 on both sides x<7 now it cant be 0 or a negative integer

    • one year ago
  16. syhna
    Best Response
    You've already chosen the best response.
    Medals 1

    waah i dont get it T.T where'd you get the 1?

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

    same here

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

    where would you get the 1 sir?

    • one year ago
  19. itsmylife
    Best Response
    You've already chosen the best response.
    Medals 1

    well look if it will be less than 1 then sum of two sides wont be greater than the third side ;)

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

    that's like trail and error.

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

    nvm if you cant explain how did you got the 1.

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

    I get it already :)

    • one year ago
  23. syhna
    Best Response
    You've already chosen the best response.
    Medals 1

    i think i understood it already see if the othe side is 1 then 5 + 1 would be equal to 6 right? since we need the third to be greater and not equal to the sum then we use 2 and 2 is greater than 1 so if we would put it in a situation where x = 2 then we'll get 5 + 6 + 2 < 18 13 < 18 5+6 > 2 11 >2 5+2 > 6 7>6 6 + 2 > 5 8 > 5

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

    great :)

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

    We must fulfill the second sentence criteria to find the range of values of x hence, the range would be 1<x<7

    • 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.