Help me if you can I'm feeling down...
Help me get my feet back on the ground!!

Question

Help me if you can I'm feeling down...
Help me get my feet back on the ground!!

amtran_bus · Answer

Got to fill in all those blanks!

amtran_bus · Answer

A rectangular storage container with an open top has a volume of 16 m3. The length of its base is twice its width. Material for the base costs $6 per square meter; material for the sides costs $2 per square meter. Express the cost of materials as a function of the width of the base.

amistre64 · Answer

looks like the actual information to fill in is missing from the picture ....

amtran_bus · Answer

Actually, it should all come from here:
A rectangular storage container with an open top has a volume of 16 m3. The length of its base is twice its width. Material for the base costs $6 per square meter; material for the sides costs $2 per square meter. Express the cost of materials as a function of the width of the base.

amtran_bus · Answer

@amistre64

yanasidlinskiy · Answer

Wow!!! Have you learned any of this stuff?

amistre64 · Answer

|dw:1401823087051:dw|

amistre64 · Answer

V = lwh

h = V/lw,  but l = 2w

h = V/2w^2

Ab = l*w
As = lh+lh+wh+wh

amistre64 · Answer

well, filling in boxes,  if we have an area of lw,  and it costs k per ... then the first box has to be what?

amtran_bus · Answer

The first box, answer is 6.

amistre64 · Answer

good, and they basically give you the next 2 boxes for you

amtran_bus · Answer

Please excuse me, I am delirious from working this all day. Can you show me those 2? lol sorry.

amistre64 · Answer

2(area of one side) + 2(area of the different side)

and there are 2 sides each 

2[ 2(area of one side) + 2(area of the different side)]

amistre64 · Answer

how do they define the needed areas?

amtran_bus · Answer

you mean by h, 2w, w?

amistre64 · Answer

yeah

amistre64 · Answer

2(wh) + 2(2wh)  gives us 4 sides .... at $2 each is therefore

2[2(wh) + 2(2wh)]  what do we put in the boxes?

amistre64 · Answer

really? 

2[2(wh) + 2(2wh)] 

2[2(....) + 2(2(.....))]

what goes in the boxes?

amtran_bus · Answer

Duh me.

amtran_bus · Answer

Yes yes. Sorry about that.

amistre64 · Answer

now the sum of the total cost is the addition of everything we have filled in so far .... so the next 3 boxes are the exact same thing as the first 3 boxes we just did ...

amtran_bus · Answer

ok. Thanks.

amistre64 · Answer

6(2w^2) + 2[2wh + 2(2wh)]   simplify it into :


___w^2 + ___wh

amistre64 · Answer

now they say to eliminate h, use the fact that the volume is equal to 16 m^3,  then they ask you to fill in the box that says the volume is equal to _____

amistre64 · Answer

then they say ... divide off the 2w^2,  and simplify the results for h

amtran_bus · Answer

*we are right with everything up to this point*
THANK YOU!

16

amistre64 · Answer

then it says to take that h, in terms of w, and fill it into the equation that we got to begin with ...

amtran_bus · Answer

|dw:1401824332240:dw|

amistre64 · Answer

have you finished yet?  when you do post your stuff and ill post mine

amtran_bus · Answer

Sorry. This [site] is so slow.

amtran_bus · Answer

bunch more 12's an 8 or 2, and other stuff. Got it. Thanks.

amistre64 · Answer

:)  it was basically alot of filling in what they gave you already :)

amtran_bus · Answer

U got the deepfreeze in your windows?  Thanks again!