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Identifying a conic from its equation |
2007-08-19 |
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Robin pose la question : Hi,
Do you have any tips how to identify a conic from its equation? Leeanne Boehm and Steve La Rocque lui répond. |
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The change in an average |
2007-08-19 |
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farah pose la question : the average height of a group of 25 students goes up by 2 cm when astudent of height 165 cm replaces a student from the group.what is the height of the boy who went out of the group? Stephen La Rocque lui répond. |
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Common factors |
2007-08-19 |
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John pose la question : I have problem factorising 2p^3 - 34p. Please advise me. Leeanne Boehm, Steve La Rocque and Penny Nom lui répond. |
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Percentage change |
2007-08-19 |
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nona pose la question : If inputs increase by 30% and outputs increase by 15%, what is the percentage change in productivity? Stephen La Rocque lui répond. |
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Two squares |
2007-08-18 |
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Jerry pose la question : The vertex E of a square EFGH is inside a square ABCD. The vertices F, G and H are outside the square ABCD. The side EF meets the side CD at X and the side EH meets the side AD at Y. If EX = EY, prove that E lies on BD. Chris Fisher lui répond. |
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Tangents to a circle |
2007-08-18 |
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Laura pose la question : I have tangents from point A and B that intersect at C. A third tangent XY lies in between the two lines that I have already drawn. I measured the perimeter and then I drew another line that was tangent to the circle and was inside the two lines again and measured the perimeter again. The perimeters were the same but I don't know how to prove why this happened and write a theorem for it. Chris Fisher lui répond. |
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The weight of a hollow cylinder |
2007-08-18 |
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chris pose la question : how do you find how much a 4 foot diameter cylinder 4ft tall with a thicknees of 6 inches weigh Stephen La Rocque lui répond. |
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Re-arranging the alphabet |
2007-08-18 |
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samhita pose la question : Find the number of ways of arranging 26 letters in the English alphabet in a row such that there are exactly 5 letters between x and y. Stephen La Rocque and Penny Nom lui répond. |
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Exemples d'équations a résoudre |
2007-08-17 |
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Stéphanie pose la question : j'aimerais connaitre les terme pour désigner pour les chiffres dans l'algèbre et pouvoir avoir quelques exemples d'équations a résoudre!! Claude Tardif lui répond. |
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A chord of a parabola |
2007-08-17 |
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Robin pose la question : I am going to show that the chord PtPt' of the parabola has the equation 2x-y(t+t')+2att'
A point on the parabola can be represented as Pt= (at2, 2at). Penny Nom lui répond. |
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How much water is this? |
2007-08-16 |
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Judy pose la question : Have an area 731 sq. ft with 5" of water all the way around. How many gallons is this? Your help is appreciated. Stephen La Rocque lui répond. |
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Relations and functions |
2007-08-16 |
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virginia pose la question : determine whether each relation is a function provide reasons for identifying relation
(3, 4) (5, 9) (9, 9) (2, 3)
(0, 0) (0, 1) (1, 4) (2, 4)
(2, 1) (4, 5) (8, 4) (1, 0)
(8, 3) (8, 0) (7, 7) (4, 7) Steve La Rocque lui répond. |
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6 digit combinations |
2007-08-16 |
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steve pose la question : how many 6 digit combinations are there (using a number only once) are there using numbers 1-16 Penny Nom lui répond. |
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Safe diving hours |
2007-08-16 |
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San pose la question : At a popular pier, the average depth of the water at low tide is 1m. The
average depth of the water at high tide is 8m. One complete cycle takes
12h. Given by the equation of y=3.5cosPi/6t+4.5 where y is the height
of the tide in (m) and t is the time in (hour)
*many people dive from this pier during the day. If the water must be at
least 3m deep to dive safely, between what daylight hours should people
dive? Stephen La Rocque lui répond. |
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Breaking even |
2007-08-16 |
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virginia pose la question : a company that manufactures bikes has a fixed cost of $100,000.00 it costs $100 to produce each bike. the selling price per bike is $300.00
write the cost function, c
write the revenue function, r
determine the break even point Leeanne Boehm and Steve La Rocque lui répond. |
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