Got Homework?
Connect with other students for help. It's a free community.
Here's the question you clicked on:
 0 viewing
a piece of cardboard has an area of 486 cm^2. a square of side 3cm is cut from each corner and an open box is made by turning up the ends and sides if the volume of the box formed is 756cm^3. what are the dimensions of the cardboard?
 one year ago
 one year ago
a piece of cardboard has an area of 486 cm^2. a square of side 3cm is cut from each corner and an open box is made by turning up the ends and sides if the volume of the box formed is 756cm^3. what are the dimensions of the cardboard?
 one year ago
 one year ago

This Question is Closed

hartnnBest ResponseYou've already chosen the best response.1
drawing a figure will help, could u draw a figure of this ?
 one year ago

hartnnBest ResponseYou've already chosen the best response.1
volume = 3(x6)(y6) = 756
 one year ago

hartnnBest ResponseYou've already chosen the best response.1
can u solve those 2 equations ? xy=486 3(x6)(y6) = 756 ?
 one year ago

erosheaBest ResponseYou've already chosen the best response.0
cAN I DO the substitution method?
 one year ago

erosheaBest ResponseYou've already chosen the best response.0
x = 486/y then substitute to the second equation
 one year ago

hartnnBest ResponseYou've already chosen the best response.1
try it, if u go wrong, i'll help.... instead substitute xy=486 in 2nd equation
 one year ago

hartnnBest ResponseYou've already chosen the best response.1
u get xy term in 2nd equation
 one year ago

hartnnBest ResponseYou've already chosen the best response.1
and u'll be able to find x+y from 2nd equation...
 one year ago

erosheaBest ResponseYou've already chosen the best response.0
18y^2810y+8748 very big numbers >.<
 one year ago

hartnnBest ResponseYou've already chosen the best response.1
if 18y^2810y+8748 is correct... i have not checked that.
 one year ago

hartnnBest ResponseYou've already chosen the best response.1
y^245y+486 =0 is correct can u factor it ?
 one year ago

hartnnBest ResponseYou've already chosen the best response.1
y^245y+486 =0 (y18)(y27)=0
 one year ago

hartnnBest ResponseYou've already chosen the best response.1
find y from here, then u also get 2 values of x then dimensions are x,y
 one year ago

erosheaBest ResponseYou've already chosen the best response.0
you're a very big help to me my friend. thanks a lot :)
 one year 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.