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Maximize the volume of a cone |
2007-04-27 |
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ashley pose la question :
hello,
I've been stumped for hours on this problem and can't quite figure it out.
The question is: A tepee is a cone-shaped shelter with no bottom. Suppose you have 200
square feet of canvas (shaped however you like) to make a tepee. Use
calculus to find the height and radius of such a tepee that encloses the
biggest volume.
Can you help??
Stephen La Rocque and Penny Nom lui répond. |
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(a-b)/b = c |
2007-04-27 |
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Adam pose la question :
What does
(a-b)/b = c
represent when c is a percentage?
Penny Nom lui répond. |
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A line parallel to a given line |
2007-04-26 |
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vincent pose la question :
I forgot how to write the equation of the line satisfying the given conditions
through (2,-3) parallel to 2x=3y+5
and how would you graph this
Penny Nom lui répond. |
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(1+i)^(2-i) |
2007-04-26 |
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Eilis pose la question :
How do I solve (1+i) to the power of 2-i?
i.e. (1+i)^(2-i)
Penny Nom lui répond. |
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Complementary and supplementary angles |
2007-04-26 |
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Tracey pose la question :
I have looked at your answers for students asking if groups of more than
two angles can be considered either complementary or supplementary.
Your answer is basically "no" because of historic definition. However, I
present to you the following case to consider:
Segments AB, CD and EF intersect at point G creating 6 angles
numbered 1-6 in a clockwise manner. If Angle 1=25 degrees, and
angle 2 = 106 degrees, would the only way to calculate the measures of
angles 3 and 6 not be to consider the definition of supplementary angles?
And, if one was to be doing a proof of this, would not the reason be "definition
of supplementary angles"?
This, then, creates a group of 3 angles that are supplementary.
Help me correct my logic if it is flawed.
Penny Nom lui répond. |
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The sum of two or more consecutive integers |
2007-04-26 |
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nana pose la question :
some numbers can be written as the sum of two or more consecutive integers(we consider positive integers only)
other number (eg. 4) cannot be express in this way.
let us call a number which can be expressed in this way a SOALTCI( sum of at least two consecutive integers)
a). list the first few SOALTCI and conjecture the general formula.
b). Prove that any number of the given form(in your answer (a)) is a SOALTCI
Penny Nom lui répond. |
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An average homework grade |
2007-04-26 |
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vince pose la question :
If your homework grades is only 15% of the total grades and with an average
homework grade of 90% what is your earn point for the homework
earn point = average times percent
Stephen La Rocque lui répond. |
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The area of a hexagon |
2007-04-26 |
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Amber pose la question :
could you explain how to find the area of a hexagon?
Stephen La Rocque lui répond. |
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Producing chocolate bars |
2007-04-26 |
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anne pose la question :
If you have to produce an average of 114 bars of chocolate over 7.5 hours how many do you have to produce over 9.5 hours.
Penny Nom lui répond. |
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The vertices of a hexagonal pyramid |
2007-04-26 |
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Madeline pose la question :
How many vertices does a hexagonal pyramid have??
Penny Nom lui répond. |
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Paying off a debt |
2007-04-26 |
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Ema pose la question :
How would you enter a formula in Excel for the following:
payment is applied to principal balance, then 8% interest
compounded daily, then .25% monthly penalty
Stephen La Rocque and Penny Nom lui répond. |
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Two parallel lines |
2007-04-25 |
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prasanna pose la question :
Let me know the Equation of a line which is parallel to some other line at a distance of Dmts.
Penny Nom lui répond. |
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A cylinder inside a sphere |
2007-04-25 |
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Louise pose la question :
i need to find the maximum volume of a cylinder that can fit inside a sphere of diamter 16cm
Penny Nom lui répond. |
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A linear system |
2007-04-25 |
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Tee pose la question :
2x -y =5
2x +=y =5
and also
3/7x + 5/9y =27 (fractions)
I have to find the addition method to both problems
Penny Nom lui répond. |
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How many tons of sand is needed |
2007-04-25 |
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Jennifer pose la question :
How many tons of sand is needed to cover 350 cubic square feet?
Penny Nom lui répond. |
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