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A quadratic function |
2007-04-12 |
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From sveta:
determine the quadratic function
f(x)=ax^2+bx+c,such that f(x)+2x+8=f(x+1) , and f(1)=12
Answered by Stephen La Rocque. |
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Intersection of a line and a circle |
2007-04-12 |
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From gaby:
The sum of two numbers is 9. The sum of the squares of the two numbers is 41. Find the numbers.
Answered by Steve La Rocque and Melanie Tyrer. |
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Principia Mathematica |
2007-04-12 |
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From victoria:
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
Answered by Stephen La Rocque and Penny Nom. |
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A wooden hexagonal pyramid |
2007-04-12 |
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From David:
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.
Answered by Stephen La Rocque. |
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An arc shaped groove into a peice of metal |
2007-04-12 |
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From daniel:
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
Answered by Stephen La Rocque. |
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A piece of paper is cut in half |
2007-04-12 |
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From Jana:
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.”
Answered by Stephen La Rocque. |
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Swimming pool water |
2007-04-12 |
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From tina:
How much water does a 24' round, 4' deep swimming pool hold?
Answered by Haley Ess. |
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A quadratic problem |
2007-04-12 |
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From Chin:
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?
Answered by Stephen La Rocque. |
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Choosing 6 from a set of 12 |
2007-04-12 |
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From Darren:
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?
Answered by Stephen La Rocque. |
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Where will volume 13 go? |
2007-04-12 |
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From Shawn:
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?
Answered by Stephen La Rocque and Penny Nom. |
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Solving Quadratic-Liner Equations algebraically |
2007-04-12 |
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From Hector:
Solving Quadratic-Linear Equations algebraically.
y=x^2-4x+3
y=x-1
Answered by Stephen La Rocque. |
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6 purple and 4 orange socks |
2007-04-12 |
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From Reane:
^ 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.
Answered by Gabriel Potter. |
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A subtraction problem with negative numbers |
2007-04-12 |
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From Bridget:
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)=?
Answered by Penny Nom. |
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A 13 sided figure |
2007-04-12 |
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From Kiara:
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!
Answered by Stephen La Rocque. |
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Reducing the over all size of a irregular pentagon |
2007-04-11 |
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From Gilbert:
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
Answered by Penny Nom. |
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