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

Nick2019 Group Title

Sarah wants to hang a mirror in her room but the mirror and frame must not have an area larger than 15 square feet. The mirror is 3 feet wide and 4 feet long. Which quadratic equation represents the area of the mirror and frame combined? (The frame must have equal width of x on each side.) 3x2 + 14x − 2 = 0 4x2 + 14x − 3 = 0 x2 + 12x − 14 = 0 2x2 + 7x − 14 = 0

  • 2 years ago
  • 2 years ago

  • This Question is Closed
  1. Nick2019 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    • 2 years ago
    1 Attachment
  2. rebeccaskell94 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    Well to find the area of a rectangle we do S + S x 2 or s•s + s•s so we have 3 +4 x 2 = x or 3 x 3 + 4 x 4 = x @lgbasallote Right-o?

    • 2 years ago
  3. rebeccaskell94 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    So far at least haha obviously not the full answer yet but I want to make sure I'm on the right track.

    • 2 years ago
  4. Nick2019 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    umm i really dont know but if you get the wrong answer no big deal :)

    • 2 years ago
  5. rebeccaskell94 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    lol no problem xD

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

    Mmm, I don't quite see what you're saying there. I don't think it's right.

    • 2 years ago
  7. Nick2019 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    what did you get?

    • 2 years ago
  8. rebeccaskell94 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    Well we have to find the initial area before doing the next part xD lol idk @nick SmoothMath is a dollface he's really good at helping :D I'll shut up now :x

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

    That's a thought, Becca, but this will work better. First, Nick, simply draw a picture, like this |dw:1341586226088:dw| See how I drew the mirror, 3X4, and then the frame around it has a width of x?

    • 2 years ago
  10. Nick2019 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    yep

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

    To find the area, we need to do L*W, but first, we should write an expression for how long L is and another for how long W is. See if you can do that on your own.

    • 2 years ago
  12. Nick2019 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    ok thanks for the help

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

    Haha don't leave yet. Tell me what you get for how long L is.

    • 2 years ago
  14. lgbasallote Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    i think what @rebeccaskell94 did is a variation of the perimeter...looks like combo of perimeter and area

    • 2 years ago
  15. rebeccaskell94 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    oh pffft my bad. I need to stop helping people in math xD

    • 2 years ago
  16. lgbasallote Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    lol dont get discouraged!!

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

    Becca, the best way to learn something is to teach it. Just try to make sure you understand it before you teach =)

    • 2 years ago
  18. lgbasallote Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    like einstein said...if you cant explain it simply then you dont understand it fully

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

    Great quote =) I try to let it inform my teaching style.

    • 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.