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[(400/n)-5](n+ 4)=400 |
2006-07-02 |
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Maria and George pose la question :
Can somebody solve for n in the following equation please?
[(400/n)-5](n+ 4)=400
Penny Nom lui répond. |
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Some plumbing calculations |
2006-07-02 |
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Steve pose la question :
I am preparing to write my journeyman plumber ticket and would appreciate answer/solutions to the following math questions along with the formula to solve them
- A range boiler is 16 in. in diameter and 4 ft high. How many gallons will it hold ?
- What would the weight in Kg be if the pipe was .4 of a meter in diameter and it was 8.6 m in length
- An oil storage tank is 4 m in diameter and 6 m high. How , many liters of oil can be stored
I thank you in advance for your help ... all math books I have are US and nothing is Metric
Stephen La Rocque and Penny Nom lui répond. |
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A goods and Services Tax calculation |
2006-07-01 |
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Carol pose la question : If I have $1700 how much of that is GST? Before the GST was changed to 6% you would multiply $1700 by .06542. Now what number do you multiply for 6% GST. No PST involved. Penny Nom lui répond. |
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A number puzzle |
2006-06-30 |
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Atitya pose la question : The diagram given below consist of seven line segments and six circles,place the numbers 1 to 13 on either a line or a circle in such a way that the numbers on each segment is the difference of the two at its end points. Stephen La Rocque and Penny Nom lui répond. |
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Some word problems |
2006-06-30 |
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Oliver pose la question :
Question: I am a father of a 10 years old boy and sending this question from Bangkok, Thailand. I need solutions for the following:
1
Joseph and Peter spent $45 altogether.
Joseph and Harold spent $65 altogether.
If Harold spent 3 times as much as Peter, how much did Joseph spent?
I know the answer is $35 but do not know how to get to it.
2
. . .
Penny Nom lui répond. |
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Order of operations |
2006-06-29 |
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Jaden pose la question :
(1) A triangle has vertices at (-3,-3) (7,-3) and (-2,5). What is the area of the triangle?
Is there a way of doing this so that you dont have to graph it? If the x axis is horizontal can i say it is the base and the y-axis is horizontal meaning the height. Would I be able to do this...-3 to 7-->9 spaces, -3 to 5-->7 spaces-----9(7)63/2=31.5
(2) A cube has a surface area of 54 square centimeters. What is the volume of the cube in cubic centimeters?
Stephen La Rocque lui répond. |
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Order of Operations |
2006-06-29 |
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Marcy pose la question : I have been having problems with this skill testing question. I know the rules of operation but I don't understand why they would put it in brackets. Can you help me. I have two answers but I would like to know which one is right. Im having a disagreement with a friend over this matter. Thank you so much
[ (20 + 82 - 6) ÷ 16 ] x 14 Steve La Rocque and Paul Betts lui répond. |
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Painting a house |
2006-06-28 |
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A student pose la question : If Sally can paint a house in 4 hours, and John can paint the same house in 6 hour, how long will it take for both of them to paint the house together? Stephen La Rocque and Penny Nom lui répond. |
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A percentage question |
2006-06-28 |
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Terrence pose la question :
Given the percentage and the total amount, I need to know how to arrive at the total amount without guessing.
Example: 25\% of what is $298,750.00
Stephen La Rocque lui répond. |
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Marking out a circle |
2006-06-28 |
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Peter pose la question : given a straight line. how do i work out the off sets ( at right angles) at several intermediate points. to set out a 5.0m arc that has a 18.0m radius. Stephen La Rocque and Penny Nom lui répond. |
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The volume of a building |
2006-06-28 |
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A student pose la question : a building is 8 feet wide and 16 feet long. it has a flat roof that is 12 feet high at one corner, and 10 feet high at each of the adjacent corners. what is the volume of the building? Penny Nom lui répond. |
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The area of a house |
2006-06-28 |
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Michael pose la question : I would like to know how to measure the area of a house? Penny Nom lui répond. |
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livinia the housefly finds herself caught in the oven |
2006-06-27 |
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Danielle pose la question :
livinia the housefly finds herself caught in the oven at the point (0,0,1). the temperature at the points in the oven is given by the function
T(x,y,z) = 10 (xe(-y2) + ze(-x2))
where the units are in degrees celsius.
(i.)so if livinia begins to move towards the point (2,3,1) at what rate in deg/cm does she find the temp. changing?
(ii.)in what direction should she move in order to cool off as rapidly as possible?
(iii.)suppose that livinia can fly at a speed of the square root of 2 (cm/sec.) if she moves in the direction of part (ii) at what rate will she find the temp. to be changing?
Penny Nom lui répond. |
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I have a ditch how many tons of dirt will it take |
2006-06-25 |
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Scott pose la question : I have a ditch 200 feet long 10 feet wide and 5 feet deep.How many tons of dirt will it take to fill it? Stephen La Rocque lui répond. |
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An octagon shape flower bed |
2006-06-24 |
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Brandy pose la question : hello my name is brandy my husband and I would like to build an octagon shape flower bed to put around the tree in the front yard
we would hope to have the whole shape about 4 ft-5 ft around the tree. what would be the way to find out how to cut each side to that they fit together equally Penny Nom lui répond. |
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