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Pumping water into a tank |
2008-09-13 |
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nadha pose la question : A water pump can fill a tank at the rate of 750 litres per hour.A tank has a capacity of
9000 litres. Find the time needed to fill 7/15 of the tank? Stephen La Rocque lui répond. |
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Three addends that sum to ten |
2008-09-13 |
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Alfred pose la question : How many probabilities are there to have 3 addends to get a sum of 10? What is the formula? Harley Weston lui répond. |
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Grouping addends |
2008-09-13 |
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juan pose la question : how do you group the addends then find the sum: 2+4+6= Penny Nom lui répond. |
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The height and base of a triangle |
2008-09-12 |
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Bailey pose la question : The length of the base of a triangle is 1cm less than 5 times the height of the triangle. The area of the triangle is 21 square cm. What is the the height of the triangle and the length of the base of the triangle? Stephen La Rocque lui répond. |
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A number that divides by six but not by three |
2008-09-12 |
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Ken pose la question : A number that divides by six but not by three Stephen La Rocque and Victoria West lui répond. |
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Cutting a pipe on a 45 degree angle |
2008-09-12 |
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Bakshani pose la question : how do you a mark a pipe 5 inch diameter and cut it to form a 45 degree angel Stephen La Rocque lui répond. |
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A garden in the shape of an isosceles triangle |
2008-09-12 |
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Rita pose la question : Gregory wants to build a garden in the shape of an isosceles triangle with one of the congruent sides equal to 12 yards. If the area of his garden will be 55 square yards, find, to the nearest tenth of a degree, the three angles of the triangle. Penny Nom lui répond. |
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The average height of an attic |
2008-09-12 |
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oliver pose la question : I need to find out the average height of a specific volume/area.
a standard house shape side walls height 10m, height in centre of house 15m.
width 15m length 25m (the roof spans the width)
Within the house in the corner there is a (box shape) room which is 5m in height by 3m wide and 4 m long
How do i work out the average height of the space directly above the room (same floor area)? Stephen La Rocque and Harley Weston lui répond. |
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The area of a quadrilateral |
2008-09-11 |
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Mike pose la question : How do I find the area of a quadrilateral that has one sloped side? Penny Nom lui répond. |
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Intercepts |
2008-09-11 |
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megan pose la question : When I have problems like y=x(x^2-3), to find the x- and y-intercepts, I set each one to 0. But where do I go from there? Penny Nom lui répond. |
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Putting fractions in order |
2008-09-11 |
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kaby pose la question : whats the answer for this? put it from least to greatest: 1/4, 1/9, 1/8 Penny Nom lui répond. |
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A price reduction and a discount |
2008-09-11 |
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Rita pose la question : A store advertises that during its Labor Day sale $15 will be deducted from every purchase over $100. In addition, after the deduction is taken, the store offers an early-bird discount of 20% to any person who makes a purchase before 10 a.m. If Hakeem makes a purchase of x dollars,
x > 100, at 8 a.m., what, in terms of x, is the cost of Hakeem's purchase?
(1) 0.20x - 15 (3) 0.85x - 20
(2) 0.20x -3 (4) 0.80x - 12 Penny Nom lui répond. |
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Distance, time and rate |
2008-09-11 |
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Pauline pose la question : During the first part of a trip, a canoeist travels 100 miles at a certain speed. The canoeist travels 25 miles on the second part of the trip at a speed 5 mph slower. The total time for the trip is 5 hrs. What was the speed on each part of the trip? Penny Nom lui répond. |
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The perimeter of an equilateral triangle |
2008-09-11 |
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Gerry pose la question : How can I find the perimeter (length of side) of an equilateral triangle if the only information I have is the altitude? Penny Nom lui répond. |
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Supplementary angles |
2008-09-11 |
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Shanaz pose la question : Find an angle such that 3 times its supplement equals 450. Penny Nom lui répond. |
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