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

KE8717504 Group Title

consider the rectangle below. It's area is 5a^2+21ab+4b^2 and it's length is 2a+8b. find it's width w, in terms of a and b, by dividing it's area by it's length.

  • 2 years ago
  • 2 years ago

  • This Question is Closed
  1. KE8717504 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    |dw:1347684283899:dw|

    • 2 years ago
  2. KE8717504 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    @jim_thompson5910

    • 2 years ago
  3. jim_thompson5910 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    what do you have so far

    • 2 years ago
  4. KE8717504 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    I'm just not sure how to work this.

    • 2 years ago
  5. KE8717504 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    or how to go about starting it?

    • 2 years ago
  6. jim_thompson5910 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Use the idea that Area = Length * Width or A = LW Solve for W W = A/L

    • 2 years ago
  7. jim_thompson5910 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Then make the proper substitutions. Then divide and simplify.

    • 2 years ago
  8. KE8717504 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    @jim_thompson5910 this is what i get when i do that. 2ab^2+5a^2+21ab+8b

    • 2 years ago
  9. KE8717504 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    That is diving the Area by the length

    • 2 years ago
  10. jim_thompson5910 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    simplify (5a^2+21ab+4b^2)/(2a+8b)

    • 2 years ago
  11. KE8717504 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    5a+b/2 ?

    • 2 years ago
  12. KE8717504 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    would that make my width?

    • 2 years ago
  13. jim_thompson5910 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Can you factor 5a^2+21ab+4b^2 at all?

    • 2 years ago
  14. KE8717504 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    yes into (a+4b)(5a+1b) right?

    • 2 years ago
  15. KE8717504 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    but u still get the same answer right 5a+b/2 right?

    • 2 years ago
  16. KE8717504 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    @jim_thompson5910

    • 2 years ago
  17. Algebraic! Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    It's right.

    • 2 years ago
  18. jim_thompson5910 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Did you mean \[\Large \frac{5a+b}{2}\] ?

    • 2 years ago
  19. KE8717504 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    @jim_thompson5910 yea

    • 2 years ago
  20. jim_thompson5910 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    then yes, you are correct

    • 2 years ago
  21. KE8717504 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    I should get a learners metal on that one :0

    • 2 years ago
  22. KE8717504 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Thanks !!

    • 2 years 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.