Math word problem help?
2015-06-02 2:33 pm
I mainly need help on the last 2. Buy I don't know if the 2nd problem is correct. You don't have to answer the last one but I do need help setting up an equation. I know it's a parabola.
回答 (1)
2015-06-02 2:34 pm
Can't read sideways.
question 4: The answer is in cubic feet, so convert all the inches to feet, then find the volume V of the bed in cubic feet.
V cubic feet of water weighs 2071 pounds, therefore, one cubic foot of water weighs 2071/V pounds.
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Suppose each cut-out is x inches by x inches.
dimensions of box: (18-2x) by (24-2x) by x
volume V = (18-2x)(24-2x)x
Find the value of x for which dV/dx = 0.
question 4: The answer is in cubic feet, so convert all the inches to feet, then find the volume V of the bed in cubic feet.
V cubic feet of water weighs 2071 pounds, therefore, one cubic foot of water weighs 2071/V pounds.
:::::
Suppose each cut-out is x inches by x inches.
dimensions of box: (18-2x) by (24-2x) by x
volume V = (18-2x)(24-2x)x
Find the value of x for which dV/dx = 0.
收錄日期: 2021-04-21 01:55:14
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