Got Homework?
Connect with other students for help. It's a free community.
Here's the question you clicked on:
 0 viewing
LoveYou*69
Group Title
Please explain how to find the answer to me:
Alexei wants to hang a mirror in his boat but the mirror and frame must not have an area larger than 19.25 square feet. The mirror is 3 feet wide and 5 feet long. Which quadratic equation represents the area of the mirror and frame combined? (The border must have equal width on each side.)
 2 years ago
 2 years ago
LoveYou*69 Group Title
Please explain how to find the answer to me: Alexei wants to hang a mirror in his boat but the mirror and frame must not have an area larger than 19.25 square feet. The mirror is 3 feet wide and 5 feet long. Which quadratic equation represents the area of the mirror and frame combined? (The border must have equal width on each side.)
 2 years ago
 2 years ago

This Question is Closed

nikvist Group TitleBest ResponseYou've already chosen the best response.2
\[S=(3+2x)(5+2x)\quad,\quad x\mbox{border width}\]
 2 years ago

nikvist Group TitleBest ResponseYou've already chosen the best response.2
\[(3+2x)(5+2x)\leq 19.25\]\[15+16x+4x^2\leq 19.25\]\[4.25+16x+4x^2\leq 0\]\[20.25+(4+2x)^2\leq 0\]\[(4+2x)^2\leq 20.25\]\[4+2x\leq 4.5\]\[x\leq 0.25\]
 2 years ago

LoveYou*69 Group TitleBest ResponseYou've already chosen the best response.3
Why is it 2x instead of any other number? I mean in any other equation like this, would it be 2x as well or different? bc i have a whole test like this and I dont want to ask people every single question from the test... So how did you get the 2x or is 2 just standard in this equation?
 2 years ago

nikvist Group TitleBest ResponseYou've already chosen the best response.2
top border + bottom border=2x leftside border + rightside border=2x (all borders have width x)
 2 years ago

LoveYou*69 Group TitleBest ResponseYou've already chosen the best response.3
Ohh hehe yeaa i get it now lol that was a dumb question :/ lol thank you
 2 years ago
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
 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.