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An old bike lock |
2007-08-08 |
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From Jeremy:
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.
Answered by Penny Nom. |
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What percent of 68 is 51 |
2007-08-08 |
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From Kurt:
what percent of 68 is 51
Answered by Penny Nom. |
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What was the average? |
2007-08-08 |
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From Leroy:
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?
Answered by Penny Nom. |
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Chords |
2007-08-08 |
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From HIMANSHU:
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.
Answered by Stephen La Rocque. |
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who am i? |
2007-08-08 |
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From Phillip:
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?
Answered by Penny Nom. |
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I want to learn math |
2007-08-07 |
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From Maria:
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.
Answered by Harley Weston. |
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Diameter of an octagon |
2007-08-07 |
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From Bree:
I am trying to find the diameter of a octagon with 20' sides . What formula do I use?
Answered by Stephen La Rocque. |
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The irrationality of PI |
2007-08-07 |
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From Matthew:
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.
Answered by Claude Tardiff and Stephen La Rocque. |
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Average annual earnings per share |
2007-08-07 |
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From Arul:
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?
Answered by Stephen La Rocque. |
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4,18,48,100, __ |
2007-08-07 |
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From Jeremy:
What is the next number in the following sequence?
4,18,48,100, __
Answered by Leeanne Boehm and Stephen La Rocque. |
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Find the dimensions of the rectangle that will contain the greatest area |
2007-08-06 |
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From Julirose:
The perimeter of a rectangle is 38 meters. Find the dimensions of the rectangle that will contain the greatest area.
Answered by Penny Nom. |
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Linear systems and inverses |
2007-08-06 |
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From Marsia:
explain how inverses are used to solve linear systems.
Answered by Penny Nom. |
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4 digit number combinations that start with the digit 2 |
2007-08-05 |
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From tonnie:
my question is what are all the 4 digit number combinations that start with the number 2?
Answered by Harley Weston. |
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Angular speed |
2007-08-05 |
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From Virginia:
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
Answered by Stephen La Rocque. |
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The volume of a hexagonal pyramid |
2007-08-05 |
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From monica:
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?
Answered by Penny Nom. |
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