A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

anonymous

  • one year ago

1. The perimeter of a rectangle is 78 cm. The length is 3 greater than twice its width. Find the dimensions. Divide by 2 to get 39 then since a number is 3 times greater than a different number doubled do 3*2=6 so its six times greater

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

    draw the rectangle and write an equation. Let w = width. 3 greater than twice width is saying the length is 3 + 2w |dw:1435372479239:dw| All the sides add up to the perimeter, which is 78 so this is the equation \[2w + 2(3+2w)=78\]

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

    do you know how to solve that for w?

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

    I think i do let me try

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

    w=12 ?

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

    yep. Now all that's left is to find the length. L = 3 + 2w

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

    do i have to slove for w ?

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

    so what can i write down as my answer ?

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

    no you already have w = 12. so just plug in 12 for w to get L

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

    so it would be 60 ?

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

    just list the dimensions. width = 12 cm, length = 27 cm

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

    L = 3 + 2w = 3 + 2(12) = 27

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

    Thank you for your help !

  13. 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.