A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

anonymous

  • one year ago

The polynomial x 3 + 5x 2 -57x -189 expresses the volume, in cubic inches, of a shipping box, and the width is (x+3) in. If the width of the box is 15 in., what are the other two dimensions? ( Hint: The height is greater than the depth.)

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

    A. height: 19 in. depth: 5 in. B. height: 21 in. depth: 5 in. C. height: 19 in. depth: 7 in.

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

    @SolomonZelman

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

    @DecentNabeel

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

    easy

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

    Can you please help me? I've already answered it wrong once lol @timo86m

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

    @pooja195

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

    maybe polynomial long division will work here. Divide your polynomial by x+3 maybe.

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

    But how do i even get to that part? @timo86m

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

    because usually u have to factor. And you can take x+3 as a hint that it is one of the factors.

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

    This is the factor that i figured out (x+3)(x−7)(x+9)

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

    @timo86m

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

    here is how i picture it in my head You are given x+3. U will need 2 other similar expressions to get a volume call them x+a x+b x+3 <- given And together they form (x+a) * (x+b) * (x+3) = Volume height*depth* width = volume

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

    good job

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

    Where do i go from there? @timo86m

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

    width = 15 so you are told x+3=15 x=15-3 x=12 therefor x = 12 Plug it in :)

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

    (x+3)(x−7)(x+9) X=12

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

    ( Hint: The height is greater than the depth.)

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

    |dw:1435797318265:dw| find two other sides

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

    Is it A?

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

    @timo86m

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

    not sure yet

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

    Thank you @timo86m

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

    x+9=12+9=21 x-7=12-7=5

  24. 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.