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Moving grain across the river |
2008-03-12 |
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Janice pose la question : Wesley needs to move 820 kg of grain across the river in a canoe that can carry no more than 120 kg. Wesley has a mass of 70 kg. What is the fewest number of trips he will have to make? A. 17 trips; B. 18 trips; C. 32 trips; D. 33 trips. Penny Nom lui répond. |
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A dilation project |
2008-03-12 |
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john pose la question : I am working on a dilation project.
How do I dilate an irregular octagon on a scale of 3.5 Stephen La Rocque lui répond. |
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A circle and a square |
2008-03-12 |
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mae pose la question : what are the formulas on getting the area of the square outside an inscribed circular region? Penny Nom lui répond. |
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The centre and radius of a circle |
2008-03-12 |
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Ryan pose la question : hello and thank you for such a wonderful service.
This problem I think needs to be checked could you take a gander at it and tell me if i get it correct thanks
find the center and the radius of this circle x^2+y^2=8x-2y+15=0
I cam up with center -2, 1/2 and a radius of 11 3/4 Harley Weston lui répond. |
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Estimate the cube root of 270 |
2008-03-11 |
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Tom pose la question : (a) By plotting suitable graphs, estimate to one decimal place the cube root of 270.
(b) With reference to your answer to part (a), use 8 iterations of a Bisection Search to refine your estimate. Use the nearest whole numbers either side of your estimate from part (a) as starting values.
(c) Using either of your starting values from part (b) as first guess, use the Newton-Raphson method to find the true value of the root (to 6 decimal places). Repeat using the other starting value from part (b) and compare the two results. Harley Weston lui répond. |
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Find the present age of the two siblings |
2008-03-11 |
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jessica pose la question : Theresa is four years older than her younger sister Joni. Twelve years ago, she was twice
as old as her sister . Find the present age of the two siblings. Stephen La Rocque lui répond. |
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(x^2+x-22)^4/3=16 |
2008-03-11 |
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Ryan pose la question : (x^2+x-22)^4/3=16
I keep on getting thrown off because of the fractional exponent I couldn't find an example like this one Stephen La Rocque lui répond. |
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A ton of carbon dioxide |
2008-03-11 |
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claire pose la question : I want to know the size of a box if it contained a ton of Co2? Stephen La Rocque lui répond. |
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Factor x^6-5x^3+25 |
2008-03-11 |
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jacob pose la question : how do you factor equations for algebra 2
x^6-5x^3+25 Harley Weston lui répond. |
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A width-to-length ratio of 2 : 3 |
2008-03-11 |
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Stephanie pose la question : The national flag of France has a width-to-length ratio of 2 : 3. What is the width of an 18-inch long French flag? Penny Nom lui répond. |
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Completing the square |
2008-03-11 |
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Ryan pose la question : solve for x by completing the squares,
x^2+4x-8=0 Stephen La Rocque lui répond. |
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Un bénéfice de 5% |
2008-03-11 |
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mahiques pose la question : Un propriétaire decide de vendre deux parcelles de terrains pour un montant total de 141750 F. Il fait un bénéfice de 15% sur la première et une perte de 10% sur la deuxième. L'ensemble de la transaction lui a rapporté un bénéfice de 5%.combien a-t-il vendu chacune des parcelles ? Pierre-Louis Gagnon lui répond. |
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The diagonals of a hendecagon |
2008-03-10 |
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karan pose la question : How many diagonals does a hendecagon have? Penny Nom lui répond. |
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An incorrect Babylonian formula |
2008-03-10 |
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Martin pose la question : Given the area of an isosceles trapezoid is 150, that the difference of its bases is 5 (that is b1 - b2 = 5), and that its equal sides are 10 greater than two-thirds of the sum of its bases (that is, s1 = s2 = 2/3(b1 +b2) + 10
Solve the problem using an incorrect Babylonian formula for the area of a trapezoid A = (b1 + b2)/2 x (s1 + s2)/2 Find the length of the sides of the isosceles trapezoid. Penny Nom lui répond. |
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A linear system |
2008-03-10 |
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sandhiya pose la question : one group of people purchased 10 hotdogs and 5 soft drinks at a cost of
$12.50. a second group bought 7 hotdogs and 4 soft drinks a ta cost of $9.00
find the cost of a single hot and a single soft drink.(using the row echelon form to solve) Penny Nom lui répond. |
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