A community for students.
Here's the question you clicked on:
 0 viewing
momomalinka
 2 years ago
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?
momomalinka
 2 years ago
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?

This Question is Closed

momomalinka
 2 years ago
Best ResponseYou've already chosen the best response.0dw:1343519419666:dw they are all the same size I just can't draw

Romero
 2 years ago
Best ResponseYou've already chosen the best response.0This can be anything....

Romero
 2 years ago
Best ResponseYou've already chosen the best response.0do we know the measurements of the cards or a better picture?

momomalinka
 2 years ago
Best ResponseYou've already chosen the best response.0dw:1343519858074:dw does that make you happy?

Romero
 2 years ago
Best ResponseYou've already chosen the best response.0w*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

momomalinka
 2 years ago
Best ResponseYou've already chosen the best response.0Iit HAS an answer the answer is 58 but I don't know how to get there

silverninja
 2 years ago
Best ResponseYou've already chosen the best response.0The short sides are 4s and the longer ones are 5s

UnkleRhaukus
 2 years ago
Best ResponseYou've already chosen the best response.0\[A=5w\times(w+l)\]

eohjelle
 2 years ago
Best ResponseYou've already chosen the best response.0From 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.

momomalinka
 2 years ago
Best ResponseYou've already chosen the best response.0okay so 5b^2+5Bl=180 and 4lb+4l^2=180 then use the process of elimination?

momomalinka
 2 years ago
Best ResponseYou've already chosen the best response.0i did 20b^2+20bl=720 multiplied by 4 + 20l^220bl=900 multiplied by 5 20bl cancels out so 20b^220l^2=180 now what????

eohjelle
 2 years ago
Best ResponseYou've already chosen the best response.0Now you have to find an expression for either b^2 or l^2 and substitute into one of the original equations :)

momomalinka
 2 years ago
Best ResponseYou've already chosen the best response.0dw:1343521248378:dw is that right so far?
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.