 |
|
|
|
|
|
|
|
|
An old bike lock |
2007-08-08 |
|
Jeremy pose la question :
I have an old bike lock i found in the garage of the house i just moved in to. It has four columns and the nubers are 1 through 6. I understand that there are 1236 (6x6x6x6) possibilities. Is there a graph of all the possible combinations cuz i looked all over the web and couldn't find one.
Penny Nom lui répond. |
|
|
|
|
|
|
What percent of 68 is 51 |
2007-08-08 |
|
Kurt pose la question :
what percent of 68 is 51
Penny Nom lui répond. |
|
|
|
|
|
|
What was the average? |
2007-08-08 |
|
Leroy pose la question :
A total of 50 juniors and seniors were given a math test. The 35 juniors attained an average score of 80 while the 15 seniors attained an average of 70. What was the average score for all 50 students who took the test?
Penny Nom lui répond. |
|
|
|
|
|
|
Chords |
2007-08-08 |
|
HIMANSHU pose la question :
we know that every straight line is the chord of a big circle. i have a circle
with radius 3.5feet. I want to know what is the length of the chord,
which would be a straight line.
Stephen La Rocque lui répond. |
|
|
|
|
|
|
who am i? |
2007-08-08 |
|
Phillip pose la question :
if you hold a mirror horizontally across my middle, i look the same in the mirror.if you hold a mirror between my second and third digits,i look the same in the mirror if you turn me upside down, i look the same. what 6 four-digit numbers could i be?
Penny Nom lui répond. |
|
|
|
|
|
|
I want to learn math |
2007-08-07 |
|
Maria pose la question :
Hello. I am 16-years-old, and I would like to learn as much mathematics as I can
and to really understand it. I would like to know what people mean when they
say things like "thinking mathematically" or "math is equally beautiful and true".
However, I'm not sure where to start. :-) What do you think of going back to the
beginning and working my way through Euclid?
Your help would be very much appreciated. Thank you.
Harley Weston lui répond. |
|
|
|
|
|
|
Diameter of an octagon |
2007-08-07 |
|
Bree pose la question :
I am trying to find the diameter of a octagon with 20' sides . What formula do I use?
Stephen La Rocque lui répond. |
|
|
|
|
|
|
The irrationality of PI |
2007-08-07 |
|
Matthew pose la question :
I have what I like to think of as a rather interesting question that I can't explain confidently for the life of me.
If we take a circle with a radius of 1 and we calculate the circumference, we can use 2 pi R.
Doing this calculation results in a circumference of 6.28318530717~ which goes on forever.
However, if you were to take a that same circle in the real world, say with radius 1cm and wrap a string around
it, and then measure the string, you don't get 6.28~, you get something like 6.2, a much more finite distance. The length
of the string is not an irrational number, like the math claims it to be.
Claude Tardiff and Stephen La Rocque lui répond. |
|
|
|
|
|
|
Average annual earnings per share |
2007-08-07 |
|
Arul pose la question :
A corporation with 5,000,000 shares of publicly listed stock reported total earnings of $7.20 per share for the first 9 months of operation. During the final quarter the number of publicly listed shares was increased to 10,000,000 shares, and fourth quarter earnings were reported as $1.25 per share. What are the average annual earnings per share based on the number of shares at the end of the year?
Stephen La Rocque lui répond. |
|
|
|
|
|
|
4,18,48,100, __ |
2007-08-07 |
|
Jeremy pose la question :
What is the next number in the following sequence?
4,18,48,100, __
Leeanne Boehm and Stephen La Rocque lui répond. |
|
|
|
|
|
|
Find the dimensions of the rectangle that will contain the greatest area |
2007-08-06 |
|
Julirose pose la question :
The perimeter of a rectangle is 38 meters. Find the dimensions of the rectangle that will contain the greatest area.
Penny Nom lui répond. |
|
|
|
|
|
|
Linear systems and inverses |
2007-08-06 |
|
Marsia pose la question :
explain how inverses are used to solve linear systems.
Penny Nom lui répond. |
|
|
|
|
|
|
4 digit number combinations that start with the digit 2 |
2007-08-05 |
|
tonnie pose la question :
my question is what are all the 4 digit number combinations that start with the number 2?
Harley Weston lui répond. |
|
|
|
|
|
|
Angular speed |
2007-08-05 |
|
Virginia pose la question :
the engine of a sports car rotates at 5,000 revolutions per minute (rpm). calculate the angular speed of the engine in radians per second. use 2n radians = 1 revolution
Stephen La Rocque lui répond. |
|
|
|
|
|
|
The volume of a hexagonal pyramid |
2007-08-05 |
|
monica pose la question :
what is the volume of a hexagon when the base of one triangle is 6cm and has the height of 5.1cm the height of the regular hexagonal pyramid is 18cm?
Penny Nom lui répond. |
|
|
