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	30 % off		2021-09-07
		Corrine pose la question : When I am shopping for clothing that is for sale, the advertisement may say the item is 30% off. The original price was $70. How much would it now be? (how do I figure that out?) Thank you! Penny Nom lui répond.
	The volume of a coffee cup		2020-01-25
		Amirah pose la question : What is the volume of a polystyrene cup with a height of 8cm, diameter of 5cm at the top and 4cm at the bottom when it is filled with water? Penny Nom lui répond.
	Why does 10x10x10 give 1,000.0000000000001?		2017-04-12
		Randolph pose la question : Hi, On your calculator I found that a box 10 by 10 by 10 inches has a volume of 1,000.0000000000001 cubic inches. Can you explain the numeral 1 thirteen places past the decimal? Thanks, Randy Penny Nom lui répond.
	The radius of a coffee cup		2016-09-12
		Brett pose la question : What is inside radius, in centimeters of a coffee cup if it holds 350g of coffee when filled to a depth of 9.5 cm? Assume coffee has the same density of water, 1.00g/cm3. A numeric value is expected and not an expression. Penny Nom lui répond.
	We have 2 teams of 6 couples each that play 6 games		2013-01-25
		Denise pose la question : We put together a game night where we have 2 teams of 6 couples each that play 6 games. We haven't been able to figure out an arrangement that allows each couple to play each game with a different couple from the opposite team (i.e. Team A couples play every game with a different couple from Team B). Is this possible? It works with 2 teams of 5 couples each. Chris Fisher lui répond.
	Coffee scoops per cup		2009-06-29
		charity pose la question : if my coffee machine takes 10 scoops for every six cups, how many scoops do i need for 4 cups. each scoops equals one tbls(.25 oz) Penny Nom lui répond.
	12 oz. cup		2009-04-19
		Tom pose la question : I am a ceramic teacher and wanted my students to make a 12 oz. cup, what formula should we use? Chris Fisher lui répond.
	Cubic meters, square feet and office space		2007-09-25
		Kathryn pose la question : Can someone please help and let me know how do you convert 11 cubic meters into square footage? Steve La Rocque and Harley Weston lui répond.
	What proportion of cups of coffee have at least one defect		2006-11-28
		Ayman pose la question : coffee machine may be defective since it dispenses the wrong amount of coffee (C) & or the wrong amount of suger ( S ) the probability of these defects are P(C) = 0.05, P(S) = 0.04 & P( C&S ) = 0.01 find 1- what proportion of cups of coffee have at least one defect 2- what proportion of cups of coffee have no defect Penny Nom lui répond.
	Marking out a circle		2006-06-28
		Peter pose la question : given a straight line. how do i work out the off sets ( at right angles) at several intermediate points. to set out a 5.0m arc that has a 18.0m radius. Stephen La Rocque and Penny Nom lui répond.
	How do you round off 89,100?		2006-04-19
		Jeannie pose la question : My home work says to round each number to the place of the underlined digit. It has 89,100. The underlined number is 9. What do I do? Stephen La Rocque lui répond.
	An octagon shaped soffit		2006-04-08
		Ken pose la question : I am trying to make an octagon shaped soffit in my ceiling and need help figuring how to divide the circle on the ceiling into an octagon- The circle is 7 foot in diameter. Penny Nom lui répond.
	A pyramid with its top cut off		2003-07-21
		David pose la question : What is the name given to a 3D shape that looks like a pyramid with its top cut off? Penny Nom lui répond.
	All of the Christmas trees are fifty-five percent off.		2002-01-08
		A teacher pose la question : All of the Christmas trees are fifty-five percent off. Madison bought a tree and paid $103.50. Assuming no tax, what was the original price of the tree? Penny Nom lui répond.
	A pole next to a building		2001-02-20
		Robert L. Haun pose la question : A pole 100 feet tall is erected next to a building 10' X 10' X 10' . Object is to cut off the pole so the upper end remains touching the part cut off, while the cut-off portion touches the cutoff point, the edge of the building and the ground. Note assume the pole is touching the building and is "very thin" What is/are the cutoff points? Penny Nom lui répond.
	Intersecting Lines.		1998-02-10
		Erik Heppler pose la question : My typewriter frequently makes mistakes. Suppose I gave you the following system of equations to solve: 35.26X + 14.95Y = 28.35 187.3X + 79.43Y = 83.29 When I looked back, I realized that I meant to use 14.96 as the "Y" coefficient in the first equation instead of 14.95. Solving the system using 14.95 and then solving another system using 14.96 with all other values the same both times results in the intersection points (1776, -4186) and (-770, 1816) respectively. How can that be? Penny nom lui répond.

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