A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

anonymous

  • one year ago

the area of a rectangle is 9x^2-9x-4 cm^2. find its length and width then solve the perimeter Am I missing something here? The roots are -1/3 and 4/3 but I can't seem to figure out how they would come out as the length & width PLEASE HELP

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

    from your roots that would factor out to (3x+1)(3x-4) so what do you think the length and width would be

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

    -1/3 & 4/3? But one of them is negative? :(

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

    uhm ok so the length should be (3x+1) width is (3x-1)? so i'll just substitute the 4/3 here?

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

    @alekos :) thanks!

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

    no width is 3x-4

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

    for perimeter just add l + w

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

    but if x = -1/3 and 4/3 3(4/3) + 1 = 5 3(4/3) - 4 = 0 ???

  8. 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.