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	Direct variation		2007-05-07
		From Jennifer: assume that y varies directly as x. find y when x = 54 if y =1/4 when x=3/2 Answered by Stephen La Rocque.
	Percent		2007-05-07
		From Art: what percent of 85 is 17? Answered by Stephen La Rocque.
	Are proofs important in geometry?		2007-05-07
		From BJ: Are proofs very important to know how to do? My daughter has been in Geometry & the teacher skipped proofs. Answered by Penny Nom.
	Gardening mixtures		2007-05-07
		From Dan: A mixture of 1 part sulfur and 2 parts lime is added to soil as an amendment to prevent blossom end rot in tomatoes and green peppers. One Tablespoon of the above mixture is added to each hole prior to planting (using the comparative standard of 1 Tablespoon [US] = 0.5 ounce [US liquid]). How many ounces of each component must I mix to have an adequate amount to add to 150 planting holes? Answered by Stephen La Rocque.
	Probability of H.I.V. tests		2007-05-07
		From Danielle: A medical test detects H.I.V. Among those who have H.I.V., the test will detect the disease with probability 0.95; among those who do NOT have H.I.V., the test will falsely claim that H.I.V. is present with probability 0.0125. Among those who take this test, 4% have H.I.V. The test is given to Lucille, and indicates that she has H.I.V. What is the probability that Lucille actually has H.I.V.? Answered by Stephen La Rocque.
	Probability		2007-05-07
		From Danielle: A box contains 3 defective lights and 5 non-defective lights. The lights are tested one at a time without replacement. What is the probability that the 3 defective bulbs will be found in the first 3 tests? is it 1/56 by chance? Answered by Stephen La Rocque.
	Area of region between circle and inscribed octagon		2007-05-07
		From amy: I have to find the area of the shaded region where there is an octagon inscribed in a circle The radius is 4 inches. The shaded region is everything besides the octagon inside the circle. How can I find the area of the shaded region? Thank you! Answered by Stephen La Rocque.
	How many sales does she need?		2007-05-07
		From Jimi: The new businessperson hopes to earn $50,000 per year. The profit percentage for this type of business is typically 10%. How much must sales be? Answered by Stephen La Rocque.
	A problem involving squarefree integers		2007-05-07
		From Andrew: I was told that if x > y (integers); then x would never exactly = divide y^n (n integer > 1) if (x,y) =3D 1 ; or if x is "square = free". Is the latter true and why? Answered by Stephen La Rocque and Penny Nom.
	Slicing a double-napped cone with a plane		2007-05-07
		From Andrew: I am writing a paper about creating parallel lines by slicing a double-napped cone with a plane. I have found out how it can be shown by algebra that the equations for parallel lines are generated from the degenerate case of a second degree polynomial in two variables, but I have yet to find a source with a visual representation of this case. Do you know if it exists? Answered by Chris Fisher.
	The radius of a cone		2007-05-07
		From Braden: i need to find the surface area but i only have the slant height and the height i need the radius how do i find it? Answered by Penny Nom.
	The dimensions of a rectangle		2007-05-07
		From Stephanie: The perimeter of a rectangle is 54yds , and the area of the rectangle is 180yds^2 . Find the dimensions of the rectangle. Answered by Penny Nom.
	Road incline grades		2007-05-07
		From cecil: convert grade percent to degrees Answered by Stephen La Rocque.
	Average		2007-05-06
		From michelle: the average of x and y is 20. If z = 5, what is the average of x, y, and z. Answered by Stephen La Rocque.
	The circumference of part of a circle		2007-05-06
		From Wallis: I have more then a quater of a circle, but less than half. What is the circumference if the two side are 7cm and the angle between them is 110 degrees? Answered by Penny Nom.

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