A community for students.
Here's the question you clicked on:
 0 viewing
anonymous
 3 years ago
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
anonymous
 3 years ago
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

This Question is Closed

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0Well 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 Righto?

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0So far at least haha obviously not the full answer yet but I want to make sure I'm on the right track.

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0umm i really dont know but if you get the wrong answer no big deal :)

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0Mmm, I don't quite see what you're saying there. I don't think it's right.

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0Well 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

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0That'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?

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0To 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.

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0ok thanks for the help

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0Haha don't leave yet. Tell me what you get for how long L is.

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0i think what @rebeccaskell94 did is a variation of the perimeter...looks like combo of perimeter and area

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0oh pffft my bad. I need to stop helping people in math xD

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0lol dont get discouraged!!

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0Becca, the best way to learn something is to teach it. Just try to make sure you understand it before you teach =)

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0like einstein said...if you cant explain it simply then you dont understand it fully

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0Great quote =) I try to let it inform my teaching style.
Ask your own question
Sign UpFind more explanations on OpenStudy
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
 Engagement 19 Mad Hatter
 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.