I need help?
What's the question?
#12
Has your teacher demonstrated a similar problem? If so, what could you learn from that problem? The goal here is to determine the length of one edge of the square of cardboard whose corners are cut off to make a box out of the remaining cardboard.
yea if i remember my teacher want me to make up an equation which tell the dimensions of the bos
so it is goona be (4x+4)(4x-4)=484 i actually forget sorry if you can help me out
@Astrophysics
@agent0smith
@zepdrix
Volume is length*width*height See if you can work out expressions for the length, width, and height, from the diagram
ok so the length be (4x+4), width be (x+4)
agree?
Not close.
2x+4
Look at the diagram i just attached.
idk
can you help?
Look at the diagram. Length/width/height are clearly labeled.
length is 4 I believe width is 4 and the height is x
http://assets.openstudy.com/updates/attachments/57f00af3e4b037122979defb-agent0smith-1475353958360-capture.jpg There are three things shown on this diagram. How are you misreading it.
height = 4 cm length = width = x-8 (x-8)(x-8)(4) = 484 x^2 -16 x + 64 = 121 x^2 - 16 x -57 = 0 (x-19)(x+3) = 0 x = 19 x = -3
@agent0smith
Wow. No. idk how you are misreading the diagram. The length is x, width is x, height is 4.
oh ok my bad let's be re-corrected then
me*
now I am getting (x)(X)(4)=484 x^2 =121 x^2-121=0 (x-11)(x+11)=0 x=11 x=-11
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