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anonymous
 one year ago
A rectangular storage container with an open top is to have a volume of 12 cubic meters. The length of its base is twice the width. Material for the base costs 15 dollars per square meter. Material for the sides costs 7 dollars per square meter. Find the cost of materials for the cheapest such container.
anonymous
 one year ago
A rectangular storage container with an open top is to have a volume of 12 cubic meters. The length of its base is twice the width. Material for the base costs 15 dollars per square meter. Material for the sides costs 7 dollars per square meter. Find the cost of materials for the cheapest such container.

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Itsyacoolgrl
 one year ago
Best ResponseYou've already chosen the best response.0Is it a multiple choice question?

alekos
 one year ago
Best ResponseYou've already chosen the best response.1tough question have they given you an answer?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0first write the length width and height in terms of "w"

alekos
 one year ago
Best ResponseYou've already chosen the best response.1i have a solution but i'll have to get back to you @rburns4

alekos
 one year ago
Best ResponseYou've already chosen the best response.1sorry i have to go. i can go through the full solution at another time. when would suit you?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I need it by tonight because it is due tomorrow and I will be busy

alekos
 one year ago
Best ResponseYou've already chosen the best response.1what time is it where you are?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Arizona time it's noon now

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0dw:1434739818457:dw

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0How do you minimize something? @peachpi

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Take the derivative and find the x values where it is 0.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0then test them with either the 1st or 2nd derivative test

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0finding the x value where it is zero is just making it equal to zero right? @peachpi

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0make the derivative 0 and solve for x. \[C'(x) = 60x\frac{ 7 }{ x^2 }=0\]

alekos
 one year ago
Best ResponseYou've already chosen the best response.1here is the solution. peachpi's method is correct but the numbers are wrong.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0RE alekos' solution: The 4 sides don't have the same area. 2 of them have area hx and 2 of them have area 2hx.

alekos
 one year ago
Best ResponseYou've already chosen the best response.1yes you're right. thanks peachpi. total area of the sides is 6hx which works out to 252/x. I get x=1.613 for a minimum cost of $234. @peachpi can you please check my answer

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0It says that is is wrong @alekos

alekos
 one year ago
Best ResponseYou've already chosen the best response.1@rburns, What says that it's wrong? Answer should be as peachpi has written and verified by the two of us
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