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An octagon shaped bench |
2010-07-09 |
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From rob:
i am trying to build a octagon shaped bench to fit inside a 69 inch round hot tub so that the tip of each point touches the edge of the circle where it will be fastened.
Answered by Stephen La Rocque. |
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Thickness of sand |
2010-07-07 |
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From RHONDA:
In an 18 x 33 ft area how much is 4 yards of sand in inches to cover this area.
Answered by Penny Nom. |
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777777 times 111111 |
2010-07-07 |
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From Chew:
What is 777777 times 111111 without using a calculator?
Answered by Chris Fisher. |
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Maximize the floor area |
2010-07-07 |
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From shirlyn:
A rectangular building will be constructed on a lot in the form of a right triangle with legs
of 60 ft. and 80 ft. If the building has one side along the hypotenuse,
find its dimensions for maximum floor area.
Answered by Penny Nom. |
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12 coins |
2010-07-07 |
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From Eden:
We have 12 coins same in size and shape and also weight.
But among these, one coin which has same size and shape, but not in weight
and we can't know that this coin was lighter or heavier.
We must decide which coin was lighter or heavier among these 12 coins in
4 times of weighting with scale.
Answered by Stephen La Rocque and Tyler Wood. |
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une suite |
2010-07-01 |
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From djodilune:
Salut tout le monde ! J'ai un probleme de math dans un concours de Medecine , Le voilą :
n £ N* on a : S = 1/[n(n+1)] + 1/[(n+1)(n+2)] + ... + 1/([2n(2n+1)] .
reponse a : S= 1 - 1/n
Reponse b : S= 1 - 1/(2n)
Reponse C : S= 1 - 1/(n+1)
Reponse D : S= (1/n) - (1/2n )
Reponse E : S= (1/n) - [1/(2n-1)].
Si vous pouvez me donner le reponse avec justification pour comprendre bien. Merci d'avance
Answered by Claude Tardif. |
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A collection of baseball cards |
2010-07-01 |
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From Martha:
Cody has a collection of baseball cards. Is it possible for him to
place the cards into 5 boxes so that exactly 3 of the boxes contain an
odd number of cards and the total number of cards in two of the boxes
is the same as the total number in the other 3 boxes? Explain.
Answered by Robert Dawson, Penny Nom and Claude Tardif. |
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Fillig the pool |
2010-06-29 |
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From saurabh:
At certain swimming pool certain pipes can fill it in 2 hours, another can fill it in 5 hours,and third pipe can empty the pool in 6 hours. with all three pipes turned on at the same time and starting with an empty pool , how long will it take to fill the pool
Answered by Robert Dawson. |
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The equation of a parabola |
2010-06-29 |
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From Tiffany:
Find the equation of a parabola that passes through the points (-2,3), (-1,1) and (1,9)
Answered by Stephen La Rocque. |
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A play tent |
2010-06-28 |
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From Susan:
Hi!!!
I am making a play tent as seen at the link below and need to figure out how to get the dimensions for the cone shape. The one shown has 4 different seams, but I guess I can get away with just one seam to sew it together (?) I need it to go over a hula hoop as that is what I am using for the round support at the top. My hula hoop is
35" in diameter from outside edge to outside edge. I would like the height of the teepee to be around 30" from the center to the peak.
Thanks so much, oh my gosh, I have been fretting for 2 days about this and my hair is about to fall out!!!!
Please contact me if you need any additional info.
~Susan
http://www.landofnod.com/family.aspx?c=52&f=4100
Answered by Penny Nom. |
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1 cubic yard of top soil |
2010-06-28 |
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From Bob:
If you were to place 1 cubic yard of top soil onto a 15' X 24' Garden area and it was spread evenly would the amount be a dusting of 1" or about 1'?
Answered by Penny Nom. |
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The product of 2 consecutive integers |
2010-06-28 |
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From Sharon:
the product of 2 consecutive integers is -6 less than the square of the larger number.
find the smaller number
Answered by Penny Nom. |
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An algebraic fraction |
2010-06-28 |
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From luis:
3x-2//4-3x=12
Answered by Stephen La Rocque. |
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The intersection of two graphs |
2010-06-27 |
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From Austin:
In depth explanation of how to find the intersection points of functions y=-4t+300 and y=-4.9(t-5)^2+300
Answered by Stephen La Rocque. |
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Thermal expansion of a steel beam |
2010-06-25 |
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From chris:
If a 50 ft steel beam can expand up to 4inches when heated to 1000f
How much will a 162 ft and six inches steel beam expand under the same conditions?
Answered by Robert Dawson. |
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