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A regular polygon |
2003-02-26 |
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From Melissa:
The measure of each interior angle of a regular polygon is eight times that of an exterior angle of the polygon. How many sides does the polygon have?
Answered by Penny Nom. |
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X times Y equals ten million |
2003-02-26 |
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From Baneen:
Would you be able to tell me which two numbers would compute ten million without any number having zeros in it?
Answered by Penny Nom. |
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(xy)z = 64 |
2003-02-26 |
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From Melissa:
How many ordered triples of positive intergers (xyz) satisfy (x[raised to the y])raised to the z = 64?
Answered by Penny Nom. |
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A section of land |
2003-02-25 |
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From Bev:
How many acres in a section of land? How many square miles is in a secion of land?
Answered by Penny Nom. |
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The length of an arc |
2003-02-24 |
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From Gavin:
does anyone have a formula for calculating the length of an arc if I have the circle radius and the cord length of the arc??
Answered by Penny Nom. |
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Nombre Premier |
2003-02-24 |
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From Un Etudiant:
Montrer que si p est facteur premier de 22n + 1 alors (p-1) est multiple de 2n+2
Answered by Claude Tardif. |
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Excluded values |
2003-02-22 |
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From Josh:
Why do you think it is necessary to include the "excluded values" when you write your answers to rational expressions?
Answered by Penny Nom. |
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A trig identity |
2003-02-22 |
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From Ron:
We have spent hours trying to solve the following identity without success. Can you give us some hints as to how it is done?
1 + tan(x) tan(2x) = tan(2x) cot(x) -1
Answered by Penny Nom. |
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The number of possible outcomes with 8 games |
2003-02-21 |
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From Gianni:
If 8 basketball games being played(no ties), which means a total of 16 teams, what are the total number of possible outcomes that can occur.
Answered by Penny Nom. |
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Percentage change in completion rate |
2003-02-21 |
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From Remo:
In the year 2000 300 out of a possible 600 completed a phone survey for a total of 50% completion rate. In the year 2001 20 out of 100 possible people completed the survey when it was re-done. This is a completion rate of 20% To figure out the percentage change between the years can just use the difference between the percentage figures I already have? Or can I calculate it the same as you would for non-percentage numbers. For example you gave an example here of a salary increase from $20 to $95 being an increase of 375%. Would I solve my problem the same way expect substituting my percentages (.5 and .2) in place of $20 and $95?
Answered by Penny Nom. |
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Deduct 60% from $150.00 |
2003-02-21 |
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From Mike:
How do you get this answer?
deduct 60% from $150.00
Answered by Penny Nom. |
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Percentage decrease |
2003-02-20 |
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From Hope:
What number decreased by 331/3% is 30?
Answered by Penny Nom. |
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Density |
2003-02-19 |
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From Rob:
What is the formula for converting cubic feet to pounds? (with any substance)
Answered by Penny Nom. |
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Hundreds, thousands, millions,... |
2003-02-19 |
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From Karissa and Jasmeen:
hundreds, thousands, millions, - can you help us with the rest of this sequence - we are trying to find the largest number
Answered by Penny Nom. |
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Sasha's candies |
2003-02-18 |
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From Pat:
Tick-tac-toe
Sasha and Trudy are playing tick-tac-toe. Sasha agrees to give trudy two pieces of candy for each game Sasha loses, and Trudy agrees to give Sasha three pieces of candy for each game that Trudy loses. After playing thirty games, Sasha has the amount of candy that he started with. If no ties occurred, how many games did Sasha win?
Answered by Paul Betts. |
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