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	The region between two circles		2008-09-24
		Carol pose la question : Good day! Here is a picture of the problem that we need to solve. (I send the picture through e-mail.) A small circle is inside a larger circle, the only given in the problem is the chord of the larger circle tangent to the smaller circle which measures 16cm. The question is, what is the area of the shaded region? Can you answer this question? Thanks! :) Harley Weston lui répond.
	Consecutive Even Integer Sides of a Triangle		2008-09-24
		Brad pose la question : I am having a problem coming up with a formula for my son's eighth grade math problem. We have found the answer by guess and check but have a mental block on the equation. Any help would be appreciated. The problem is: A right triangle has sides whose lengths in feet are consecutive even intergers. Determine the length of each side. Thanks Janice Cotcher lui répond.
	Parallel Tangents		2008-09-24
		manish pose la question : how many parallel tangents may a circle have? the text book shows two.but a crcle can have infinite tangents. Janice Cotcher lui répond.
	One acre, 1 foot deep		2008-09-23
		ed pose la question : 1 acre square by 1 foot deep how many cubic yards Penny Nom lui répond.
	0.99999....		2008-09-23
		Eve pose la question : Hi, i had a problem with change 0.99999... this recurring decimal to a fraction. I know the method, but the answer I got is 1 as you can see below. Where have i done wrong? Harley Weston lui répond.
	A three 0-9 tumbler lock		2008-09-22
		Louis pose la question : I recently gave my daughter an old briefcase which uses a three 0-9 tumbler lock. She set the lock and now she can’t open one side. Q. Is there a 3 digit combination number generator available to give me the 1000 possibilities? Thanks, Lou PS In this type of lock you can repeat the same digit three times. Penny Nom lui répond.
	Probability: Marbles in a jar		2008-09-22
		Andrea pose la question : Suppose you have a jar containing 100 red marbles and 100 white marbles. A) If you draw 5 marbles in a row, throwing each marble across as you draw it, what is the probability that at least one of them was red? B) If you draw 101 marbles in a row, throwing each one across the room as you draw it, now what is the probability that at least one of them was red? Harley Weston lui répond.
	Reciprocals		2008-09-22
		Josina pose la question : What is the reciprocal of 1.8 and also send me the working of the answer Penny Nom lui répond.
	Sample variance: inches to centimeters		2008-09-22
		Anita pose la question : The average height of a sample of basketball players is 6 feet, 2 inches or 74 inches. The standard deviation of this sample of players is 4 inches. If each person's height were to be multiplied by 2.54, what would be the value of the resulting sample variance? Harley Weston lui répond.
	Working together		2008-09-22
		Wade pose la question : My daughter and I are having problems with this question: Maggie can mow the lawn in 6 hrs. If her sister, Julie, helps her, it only take 2 hrs. How long does it take Julie to mow the lawn alone. Penny Nom lui répond.
	The minimum value of f(x)=maximum{x,x+1,2-x}		2008-09-21
		Saurabh pose la question : The minimum value of the function defined by f(x)=maximum{x,x+1,2-x} ? Penny Nom lui répond.
	Two consecutive numbers		2008-09-21
		tomas pose la question : what is the two consecutive numbers with a product of 4160? Penny Nom lui répond.
	The sides of an octagon		2008-09-21
		mark pose la question : I need to know the measurements of an octagon with a inside diameter of 34.5 inches from side to side Penny Nom lui répond.
	The area of a garden		2008-09-20
		Hannah pose la question : How do you find the area of a semi circle when no measurement is given? The question is find the area of the garden which is semi circular. The measurements are 24m and 26m and the semi circle's height is 10m! Penny Nom lui répond.
	Markup as a percentage		2008-09-20
		itzie pose la question : Okay, I've tried to make sense from some of the other questions and answers but I still don't see the answer that makes sense to me so here goes: I need an explanation on how $15.00 / .6 = $25 is a 40% and not as one would see it as a 60% mark up??? I don't get it. Penny Nom lui répond.

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