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OpenStudy (anonymous):
The height of a rectangular box is 4 times its length, and its width is 3 more than its length. The volume of the box is 49in^3 what is the length rounded to two decimal places?
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OpenStudy (anonymous):
|dw:1385830348555:dw|
hartnn (hartnn):
volume = length*width*height
OpenStudy (anonymous):
49=(3+L)(L)(4L) 0=12L^2+4L^3-49
hartnn (hartnn):
can u use calculator ?
OpenStudy (anonymous):
yes
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hartnn (hartnn):
because that has an irrational solution L=1.6271 found using calcy
OpenStudy (anonymous):
ok thanks @hartnn
hartnn (hartnn):
welcome ^_^
OpenStudy (anonymous):
so i set it up properly tho?
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