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A quadratic function |
2007-04-12 |
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sveta pose la question : determine the quadratic function
f(x)=ax^2+bx+c,such that f(x)+2x+8=f(x+1) , and f(1)=12 Stephen La Rocque lui répond. |
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Intersection of a line and a circle |
2007-04-12 |
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gaby pose la question : The sum of two numbers is 9. The sum of the squares of the two numbers is 41. Find the numbers. Steve La Rocque and Melanie Tyrer lui répond. |
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Principia Mathematica |
2007-04-12 |
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victoria pose la question : i need help making a poster on emilie du chatelet a great mathematician can you describe
the newton principia because i know that she worked on it
thanks,
victoria Stephen La Rocque and Penny Nom lui répond. |
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A wooden hexagonal pyramid |
2007-04-12 |
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David pose la question : Im trying to form a hexagonal pyramid out of plywood and need to know the height to the center point of the pyramid. I want to use standard 4x8 sheets of plywood and split them diagonally. Then with the resulting triangles combine them to form one triangle. Then i want to accumulate 6 of these triangle total and put together to form a hexagonal pyramid. Stephen La Rocque lui répond. |
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An arc shaped groove into a peice of metal |
2007-04-12 |
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daniel pose la question : hello i work at an engineering workshop the other night i was asked to machine an arc shaped groove into a piece of metal the cord length was 6 mm and the height from the middle of the cord to the arc was 1mm i was hoping to find the diameter of the cutter needed to do the job and also the formula to work out how to find the diameter. i believe it is 10mm dia thankyou for your time and knowledge Stephen La Rocque lui répond. |
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A piece of paper is cut in half |
2007-04-12 |
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Jana pose la question : A piece of paper is cut in half and one piece is placed on top of the other. Then the two pieces are cut in half and one half is placed on top of the other, forming a stack of four pieces. If this process is carried out a total of 25 times and the original piece of paper is .003 inches thick, what is the height of the stack to the nearest foot.
b. Using the same problem setup: Suppose now that our paper is big enough to fold 50 times. Again the question is “What is the height of the stack of paper,” but this time, “to the nearest mile.” Stephen La Rocque lui répond. |
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Swimming pool water |
2007-04-12 |
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tina pose la question : How much water does a 24' round, 4' deep swimming pool hold? Haley Ess lui répond. |
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A quadratic problem |
2007-04-12 |
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Chin pose la question : The quadratic equation y = (x-p)^2 + q cuts the y axis at y = 10. The straight line
y = -6 is a tangent to the curve. Find the values of p and q? Stephen La Rocque lui répond. |
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Choosing 6 from a set of 12 |
2007-04-12 |
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Darren pose la question : there are 12 numbers (1-2-3-4-5-6-7-8-9-10-11-12)
how many times can i pick 6 different numbers? Stephen La Rocque lui répond. |
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Where will volume 13 go? |
2007-04-12 |
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Shawn pose la question : A novice librarian shelved a twelve-volume set of encyclopedias in the following order from left to right. Volumes 8, 11, 5, 4, 9, 1, 7, 6, 10, 3, 12, and 2. Using her system, where will volume 13 go? Stephen La Rocque and Penny Nom lui répond. |
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Solving Quadratic-Liner Equations algebraically |
2007-04-12 |
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Hector pose la question : Solving Quadratic-Linear Equations algebraically.
y=x^2-4x+3
y=x-1 Stephen La Rocque lui répond. |
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6 purple and 4 orange socks |
2007-04-12 |
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Reane pose la question : ^ purple and 4 orange socks. Choose one then choose a second without putting the 1st back. What is the probability of getting 2 purple socks. I can't reach back far enough in my memory to recall how to do this. Gabriel Potter lui répond. |
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A subtraction problem with negative numbers |
2007-04-12 |
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Bridget pose la question : my daughter has to change a subtraction problem with negative numbers in it to an addition problem with negative numbers and then solve the problem such as:
-4-(-2)=? Penny Nom lui répond. |
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A 13 sided figure |
2007-04-12 |
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Kiara pose la question : I was wondering what you call a 13 sided figure. I'm in
6th grade and my teacher said i could get extra credit if I figure this out. Thanks
a lot for your help.When I get extra credit I will be sure to mention you guys!
Thanks! Stephen La Rocque lui répond. |
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Reducing the over all size of a irregular pentagon |
2007-04-11 |
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Gilbert pose la question : I'm having trouble figuring out how to reduce the over all size of a irregular pentagon.
The pentagon I'm trying to reduce has 2 right angles adjacent to each other.
Basically the shape of a house. I have width, length of the legs and the height of the peak.
But cannot figure out how to get the size of a reduced version that keeps the same proportion
and angles.
Thanks
Gilbert Penny Nom lui répond. |
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