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Nickles on the Highway |
1998-09-22 |
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Ronnie Mac Donald pose la question :
How many nickels would it take to cover 226km of highway,each nickel is 2cm in diameter?
Penny Nom lui répond. |
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A Hexagon |
1998-09-22 |
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Lee Curtis pose la question :
Could someone calculate this for me?
If a hexagon is 38 feet 8 inches across, how wide would each of the six sides be? Thank you,
Lee Curtis
Chris Fisher and Harley Weston lui répond. |
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Help the Helper |
1998-09-20 |
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John Derr pose la question :
I am TRYING to help my niece with her Community College Teacher's math course! I have a BS and an Engineer yet stumble on what her book is asking: - Fill in the blanks to continue this sequence of equations:
| 1 | = | 0+1 | | 1+3+1 | = | 1+4 | | 1+3+5+3+1 | = | 4+9 | | _______________ | = | ____ | | _______________ | = | ____ | - What expression, suggested by part (1.), should be placed in the blank to complete this equation?
| 1 + 3 + 5.........+ (2n-3) + (2n-1)+ (2n-3)+...+5 + 3+ 1 | = | _________ |
Penny Nom lui répond. |
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Five Factors |
1998-09-19 |
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Derek Yau pose la question :
To whom it may concern, I have difficulty in getting the solution to the following question: Find 5 numbers that have exactly 5 factors. I got 16, 81 but couldn't find the rest. I believe that in order to have 5 factors, it has to be a square number. Isn't it true? I guess there may be a pattern to this. Thanks for your help.
Derek Yau.
Penny Nom lui répond. |
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Rational and Irrational Numbers |
1998-09-19 |
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Ri pose la question :
I am trying to explain rational & irrational numbers to my niece who is grade 7 and am having difficulties. Could you please explain the difference between rational & irrational numbers. Thank you
Ri
Penny Nom lui répond. |
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Simplifying Roots |
1998-09-18 |
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Lauren Lattimer pose la question :
1. 2root27 divided by root 12 2. 3 root 48-root 75
Penny Nom lui répond. |
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Probability |
1998-09-17 |
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Chris pose la question :
Six marbles are placed in one of three boxes. What is the probability that each box contains two marbles? What is the formula used?
Penny Nom and Chris Fisher lui répond. |
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Unit Fractions |
1998-09-16 |
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Murray MacNeil pose la question :
Sir, my nephew is having trouble with math,he is in grade 10. this is his question. Find seven unit fractions whose whole sum is one. thank you
murray macneil
Penny Nom lui répond. |
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Random |
1998-09-15 |
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Hugh Ballantyne pose la question :
I am an occasional teacher.
Here is my question:
Does the word "random" have a technical meaning in mathematics?
Harley Weston lui répond. |
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Radicals |
1998-09-15 |
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Lana Sabo pose la question :
Question:
fifteen times the square root of twenty, divided by the square root of 2. nine subtract the square root of forty-five, divided by 3. the square root of 18 plus the square root of 12, divided by the square root of 3.
Harley Weston lui répond. |
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A Pattern |
1998-09-14 |
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Krystin pose la question :
Question:
1=1x1
1+2+1=2x2
1+2+3+2+1=3x3 draw a series of diagrams to illustrate the above pattern
Penny Nom lui répond. |
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Human Calculator |
1998-09-14 |
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Pam Sloan pose la question :
I recently saw a special on NBC Dateline about a man known as the human calculator. They called him Mr. Math. I want to know more about his books, seminars, and activities. Also, what is his real name?
Patrick Maidorn lui répond. |
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(1+z+z^2)^2 |
1998-09-10 |
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A.R. pose la question :
These questions deal with factoring. (1+z+z^2)^2 and (p^2-pq+q^2)^2 I partially understand the second line which would be 1+z^2+z^4+2z+2z^2+2z^3 but I don't understand where the 2 comes from in the second half of that line. p.s.(^2 means squared or cubed etc.) Please help me out A.S.A.P.!
I have a quiz on this tomorrow!
Thank-you,
A.R.
Harley Weston lui répond. |
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Triminoes |
1998-09-09 |
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Roxanne Hale pose la question :
I am doing an investigation about a game called triminoes (like dominoes). The game is played using triangular pieces of card. Each card has 3 numbers on it. I have to investigate the relationship between the number of trimino cards in a set and the largest number on the cards. I found; largest no. used 0 1 2 3 4
no. of trimino cards 1 4 10 20 35 I was ginen the formula for this which is:
UN= UN - 1 + 1/2 (n + 1 ) (n+2) UN=no. of trimino cards n= largest no. I don't know how to get to this equation I think it has something to do with triangle numbers!
Penny Nom lui répond. |
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Cutting a Pizza |
1998-09-09 |
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Woody pose la question :
what is the greatest number of pieces of pizza you can form if you use five straight cuts to cut the pizza? answer given is 16. please draw a diagram of the answer.
thanks, woody
Penny Nom lui répond. |
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