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HELP MEH

 Feb 8, 2016
 #1
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+5

The answer is (1)- x=~15 inches

Dimensions are: 15, 20, 44 inches.

 Feb 8, 2016
 #2
avatar+99650 
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7.6ft^3   =    7.6(1728 in^3)  = 13132.8 in^3

 

So we have  Volume  =  W * L* H

 

x * (x + 5) (3x - 1)  = 13132.8       expand the left side

 

3x^3 + 14x^2 - 5x = 13132.8

 

3x^3 + 14x^2 - 5x - 13132.8  = 0        this is probably best solved by a computer algebra system

 

WolframAlpha  gives the solution as about   x =  14.97 in   = about 15 in

 

So....the width is about 15 in

The length is about [ 15 + 5]  = 20 in

And the height is about [ 3*15 - 1]  =  44 in

 

[The first answer looks good ]

 

 

cool cool cool

 Feb 8, 2016

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