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Les quantités d'aliments |
2002-03-09 |
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Benhacine pose la question : soient les aliments A1, A2, A3.....An contenant respectivement le nutriment "a" aux quantités a1, a2, a3, et an sachant qu'un organisme a besoin d'une quantité connue de nutriment "a" égale à "Be", Ayant: A1.a1 + A2.a2 +.....+ An.an = 100.Be
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A1 + A2 + A3 +....+ An = 100 Quelles seront les quantités d'aliments A1, A2, et An qui satisferont le besoin défini "Be" de l'organisme? Claude Tardif lui répond. |
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The isosceles triangle of smallest area |
2002-03-08 |
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Lettie pose la question : can you find the isosceles triangle of smallest area that circumscribes a circle of radius of one? Walter Whiteley lui répond. |
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Percentage difference |
2002-03-08 |
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Tedd pose la question : Can you give me the formulas for calculating percentage differences between two numbers? For example: if the first number is 10 and the second number is 15, then the second number is 50% larger than the first number. However, the formula to calculate that percentage won't work if the first number is greater than the second number as in the following example: The first number is 15 and the second number is 10, with the second number being 33.3% less than the first number. Or maybe I'm mistaken and the same formula will work in both situations. Penny Nom lui répond. |
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Factor completely |
2002-03-07 |
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Taylor pose la question : I'm supposed to completely factor this but I don't know what to do with all the variables. a3b5 - a2b5 - 12ab5. Does it have anything to do with b5 being a common factor or am I completely off? Penny Nom lui répond. |
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A sequence |
2002-03-07 |
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Caroline pose la question : hi, here is the problem,
1 11 21 1211 111221 _ _ 2_ _ _ we can't get the sequence of the last line ,with the 3rd number being 2,thanks Walter Whiteley lui répond. |
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A/B = C/D |
2002-03-06 |
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Un eleve pose la question : Démontrer que si A sur B et = à C sur D, alors AxD et = à BxC. Claude tardin lui répond. |
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The square root of 2 |
2002-03-05 |
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Roger pose la question : Does two (2) have a square root or do the numbers just keep going? Are there any other numbers that behave like two when it comes to extracting the square root? Penny Nom lui répond. |
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A circular wading pool |
2002-03-04 |
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Patrick pose la question : The community of melfort is planning to build a circular wading pool in the park. The pool will cover an area of 1000m2. The building committee has decided to put a 5m cement pad around it. How much additional area will the cement pad take up? Harley Weston lui répond. |
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The slope of a tangent line |
2002-03-04 |
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Ridley pose la question : Suppose a function f(x) has the line 3x+4y=2 as its tangent line at x=5. Find f'(5). Harley Weston lui répond. |
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Percentage |
2002-03-03 |
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Nathan pose la question : I have two questions: - 25% of what number is 195?
- 42 is what percent of 112?
Penny Nom lui répond. |
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Mixed numbers, whole numbers and improper fractions which are less than 2. |
2002-03-03 |
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Dawn pose la question : Change each mixed number to a whole number and an improper fraction which is less than 2. 3 1/2 = 2 / Penny Nom lui répond. |
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What number am I? |
2002-03-03 |
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Samantha pose la question : I am an even number that has more ones than tens. My thousands digit is the quotient of 9 divided by 3 and my tens digit is the sum of 3 and 3. I have no hundreds. What number am I?......Please answer this for me...The answer I come up with is 3,060...Is this right?.. Penny Nom lui répond. |
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Une autre bille de rayon différent |
2002-02-27 |
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Sarah pose la question : une bille de 6 cm repose au fond d'1 cylindre droit dont la base est un disque de rayon 10 cm. On verse de l'eau dans le cylindre de façon à recouvrir exactement la bille. Démontrez que l'on peut remplacer la bille par une autre bille de rayon différent (mais supérieur) de sorte que l'eau initialement versée recouvre exactement cette nouvelle bille Claude Tardif lui répond. |
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The median with ties |
2002-02-27 |
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Marcel pose la question : What, exactly, is the proper way to determine the median of a set of numbers when doubles or triples of a number are part of that set? Do the doubles count as two and the triples three, or does each count only as one toward determining the median. Harley Wston lui répond. |
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Two circles inscribed in a rectangle |
2002-02-27 |
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Amina pose la question : Given a rectangle with dimensions L=6, H=5. Two circles are inscribed such that they touch each other(circles are adjacent to each other) and also their circumferences touch 2 sides of the rectangle. One of the circles has radius=4. Find the radius of the other circle. Penny Nom lui répond. |
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