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

momomalinka Group Title

what is the easiest and fastest way to solve this? Nine playing cards from the same deck are placed as shown in the figure below to form a large rectangle of area 180 sq. in. How many inches are there in the perimeter of this large rectangle?

  • 2 years ago
  • 2 years ago

  • This Question is Closed
  1. momomalinka Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    |dw:1343519419666:dw| they are all the same size I just can't draw

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

    This can be anything....

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

    do we know the measurements of the cards or a better picture?

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

    |dw:1343519858074:dw| does that make you happy?

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

    w*l=180 2*w+2*l=? This is a system of equations with an infinite number of solutions because we don't have enough information

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

    Iit HAS an answer the answer is 58 but I don't know how to get there

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

    \[P=6\ell+7w\]

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

    The short sides are 4s and the longer ones are 5s

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

    \[A=5w\times(w+l)\]

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

    From the illustration we can see that 5 breadths are equal to 4 lengths, which is equal to the length of the whole rectangle. 5b = 4l = L We also know the area of the large rectangle. From this we can create a system of equations, which we can use to solve. Notice also that the height of the rectangle is equal to a breadth and a length. h = b + l Now for the system of equations, which expresses the area (given by A = h*L): (b+l)*5b=180 (1) (b+l)*4l=180 (2) If we solve this system of equations we will get a value for the breadth and width, which we can use to find the perimeter.

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

    okay so 5b^2+5Bl=180 and 4lb+4l^2=180 then use the process of elimination?

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

    i did 20b^2+20bl=720 multiplied by 4 + -20l^2-20bl=-900 multiplied by -5 20bl cancels out so 20b^2-20l^2=-180 now what????

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

    Now you have to find an expression for either b^2 or l^2 and substitute into one of the original equations :)

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

    |dw:1343521248378:dw| is that right so far?

    • 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.