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	An irregular tetrahedron		2007-05-06
		From Carrie: Assume a tetrahedron (not regular) with vertices A, B, C, O, in which vertex A is at (0,0,0) in Cartesian space, line-segment AB is the x-axis, and face ABC defines the x-y plane (but no edge is parallel to the y-axis). Assuming that the xyz coordinates of O are all positive, and given the lengths of all of the line-segments (AB, BC, AC, AO, BO, CO), but none of the angles, what is the formula for calculating the xyz coordinates of O? Answered by Penny Nom.
	Evaluating sine and cosine		2007-05-06
		From Selimovic: How can i solve sine or cosine for angle of, lets say 10°....Maybe it's easy but i don't know how... Answered by Penny Nom.
	Optimization - carrying a pipe		2007-05-05
		From A student: A steel pipe is taken to a 9ft wide corridor. At the end of the corridor there is a 90° turn, to a 6ft wide corridor. How long is the longest pipe than can be turned in this corner? Answered by Stephen La Rocque.
	The sum of the ages of petra and her mother is 51		2007-05-05
		From Natakie: the sum of the ages of petra and her mother is 51. Her mother is 12 years more than twice as old as petra. how old are petra and her mother. Answered by Stephen La Rocque.
	A pyramid with 15 faces		2007-05-05
		From Nick: A pyramid has 15 faces. What shape is its base and how many edges does it have? Answered by Penny Nom.
	A speaker box		2007-05-05
		From darell: I am trying to build a speaker box, and i am trying to find out the measurements of a 1.5cubic feet box. Answered by Penny Nom.
	Lottery numbers		2007-05-04
		From Trish: What are all the six digit combinations between 1 & 36 Answered by Stephen La Rocque.
	Finding the area of a regular polygon		2007-05-04
		From Dana: We are trying to figure the square footage of a tetradecagon....sort of a round house with 14 sides that are 8 ft' in length. It has a height of 9 ft. How do we figure the square footage of this? Answered by Stephen La Rocque.
	A point inside a circle		2007-05-04
		From edgemitter: There is a point inside a circle (but not in its center) where two perpendicular secants intersect, dividing the circle into four regions with different area. Calculate the area of the four regions Answered by Walter Whiteley.
	Hypotenuse		2007-05-03
		From ashley: how do you find the hypotenuse Answered by Penny Nom.
	Square footage of a lot		2007-05-03
		From Linda: I have two lots which I am trying to calcuate the square footage of one lot is 50 x 285.72 x 50 x 270 2nd lot is 50 x 285.72 x 50 x 277.61 Any help would be appreciated. The answers would be GREATLY appreciated. Answered by Penny Nom.
	Comparing two pay scales		2007-05-03
		From san: Mable is offered a job selling magazine subscriptions. She has the choice of two pay scales. Pay scale 1: She can be paid $0.65 for each subscription she sells. Pay scale 2: She can be paid $0.10 for the first subscription, with the wage gong up $0.05 more for each subscription after the first. For her first sale she would make $0.10, for her second sale she would make $0.15, for her third sale she would make $0.20, and so on. Please compare and analyze the two scales. Which scale is better? Answered by Penny Nom.
	A commutative subgroup		2007-05-03
		From moulipriya: If H be a commutative subgroup of a group G. Then can we say that G is also commutative? Answered by Penny Nom.
	Edging surrounding a round pool		2007-05-03
		From Carol: Hello, I am new at this and very rusty on my math. I am getting a 24 Ft. round pool and would like to put 2ft width stone (small) edging around it. How much would I need to buy. I have to buy it by the yard (cubic yard) I am not looking for an exact, just an approx. even would be great. Thanks Carol Answered by Stephen La Rocque.
	Reverse Calculation of GST and PST in Quebec		2007-05-03
		From Derek: Could you please tell me how to figure out the PST and GST paid on an item. Example: I paid $10 total (including taxes) and the GST is 6% and the PST is 7.5%, HOWEVER, in Quebec, we pay the PST on the sub-total+GST. Thanks, Derek Answered by Stephen La Rocque.

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