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log2x+log(x+4)=1 |
2008-04-12 |
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ryan pose la question : solve the equation for x, log2x+log(x+4)=1 Penny Nom lui répond. |
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The capacity of a silo |
2008-04-12 |
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Candonn pose la question : I have a cement silo that is 30 ft. high and has a diameter of 12 ft.
I was wondering what the capacity of the silo is in tons of dry material.
The silo is flat on the bottom also. Penny Nom lui répond. |
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Jill and Matt run on a 400 meter long oval track |
2008-04-11 |
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jamie pose la question : Jill and Matt run on a 400 meter long oval track. Jill and Matt each run 10 laps daily and both run in the same lane.
One day Jill and Matt began at the same point, but ran around the track in opposite directions. Jill ran at a constant speed that was 2 meters per second faster than matts constant speed. Jill passed Matt for the first time in 40 seconds. Jill ran at a constant rate of how many meters per second? Penny Nom lui répond. |
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The slope intercept form |
2008-04-11 |
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Dave pose la question : Hi, why is there a y-intercept in the slope intercept form?What does the y-intecept have to do with the equation? Penny Nom lui répond. |
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Two trains left the city at the same time |
2008-04-11 |
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J pose la question : Two trains left the city at the same time, traveling in opposite directions. The eastbound train travels for ten hours and the westbound train travels for 5 hours. They are now 1300 km apart. The westbound train's rate is 20 km/hr faster than the eastbound train. Find the speed of each train. Penny Nom lui répond. |
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A truncated cone |
2008-04-11 |
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jason pose la question : i need to know how to figure the cubic feet of a cone that the top is 72" wide the bottom is 25" wide and it is 48" tall.
is there a specific formula for this? Penny Nom lui répond. |
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Some 4 sided polygons |
2008-04-11 |
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kathy pose la question : I am a 4th grade student and need to complete this question:
I need to draw 2 polygons with 4 sides and 2 right angles. Please help. Thanks Penny Nom lui répond. |
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Two function problems |
2008-04-10 |
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keith pose la question : find the domain: F(x)= 1/ {ln (x+5) - ln (7-x)}
find the inverse: g(t)= sqrt {2-3 ln (1-t)} Penny Nom lui répond. |
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A rectangle word problem |
2008-04-10 |
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Nick pose la question : A rectangle is twice as long as it is wide. If the length and width are both increased by 5cm, the resulting rectangle has an area of 50cm^2. Find the dimensions of the original. Penny Nom lui répond. |
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The volume of a triangular shaped pond |
2008-04-10 |
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Bret pose la question : we have a pond that is triangular shape : 130ftx130ftx150ft and is 4ft deep. How can I figure out as to how many gallons of water it will take to fill it up? Thanks for your help :) Penny Nom lui répond. |
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A car is travelling at 80 km/hr speed |
2008-04-10 |
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mathew pose la question : A CAR TRAVELLING AT A SPEED OF 80km/hr. How much time will take this car to cross a tunnel of 100M Penny Nom lui répond. |
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A chain letter |
2008-04-10 |
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Lesley pose la question : In the mail you receive a chain letter with a list of ten names on it. The instructions tell you to send $2 to the person named on the top of the list, cross his name out, and place your name on the bottom. YOu then have to send ten copies of this letter to friends with the same instructions. If no one breaks the chain how much money should you receive? Stephen La Rocque and Harley Weston lui répond. |
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The chain rule |
2008-04-10 |
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joey pose la question : pls help me to Differentiate
y=(3x^2-4x)^8 Harley Weston lui répond. |
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The game of 24 |
2008-04-10 |
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sherwin pose la question : ok is like this you must get 24 using 1,5,5,5 but you can only use +, - , / and * Claude Tardif lui répond. |
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Cutting a 200 diameter pipe at 45 degree angle |
2008-04-10 |
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Al pose la question : i want to cut a 200 diameter pipe in 45degrees. Can you demonstrate how to develop a flat rap around please Harley Weston lui répond. |
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