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Interior and exterior angles of a polygon |
2004-11-16 |
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From Aaron:
How do you find the measure of interior and exterior angles of a regular polygon when you are given the number of sides?
Answered by Walter Whiteley. |
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Planting trees |
2004-11-15 |
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From Heather:
Design a plan of how it would be possible to plant 10 trees in 5 rows, and have 4 trees in each row.
Answered by Penny Nom. |
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A fixed point problem |
2004-11-14 |
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From Bob:
I am trying to solve an existence of fixed point problem. I need to show that a function f (on reals) with f'(x)=>2 has a fixed
point.
Answered by Claude Tardif. |
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An ODE |
2004-11-10 |
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From David:
I have a question that i really cant do, it is as follows:
The ODE dy/dx + 0.5y = 0.5e^(-1.5x) ; y(5) = 2
Solve the ODE subject to the given condition using exact methods and evaluate the solution y for x = 5 x=5.2 x=5.4 x=5.6 x=5.8 x=6
Answered by Harley Weston. |
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Order of operations |
2004-11-10 |
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From Andrew:
I'm trying to solve this question, and I can't seem to remember the rules back from my high school days.
(40 x 8 ) / 2 + 55 - 15 =
Can you help me with the answer?
Answered by Harley Weston. |
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A 40% reduction |
2004-11-10 |
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From Cathy:
I'm having trouble figuring out how to figure a percentage??? it's easy to find what 40% of any given number is, but how would i accurately figure out what is the final number is when i know the number after the 40% has been removed? when i add 40% to this number it obviously is lower than it should
be. the best i could figure is;
x=?-40% ---------------> x-?=-40% i'm all confused????
Answered by Penny Nom. |
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Bedmas |
2004-11-09 |
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From Fariha:
i have a single line question and am not sure of the method
it would be appreciated if u could send me a method and a solution Q : 1 + 9 / 2 + 5 * 1000
would this be solved by BEDMAS? if not, why?
Answered by Penny Nom. |
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A standard deviation test |
2004-11-09 |
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From Karen:
How do you compare to see if a sample standard deviation is different than the population standard deviation? I know how to compare means, but not standard deviations.
Answered by Penny Nom. |
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A 30-60-90 triangle |
2004-11-09 |
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From Amy:
How do you find the length of the hypotenuse of a 30-60-90 triangle when the side opposite the 60 degree angle is 6 inches?
Answered by Penny Nom. |
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Factoring |
2004-11-09 |
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From Rise:
Q1: a2 + 5a + 6
I didn't really understand the purpose of the teacher's steps, but was able to get my daughter to find factors of 6 and then add them together to find which resulted in the sum of 5.
Unfortunately, this problem-solving technique did not help us to solve for the more complex problems as follows:
Q2: 9a3 - 24a2 + 12a
Answered by Penny Nom. |
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The lcm of 5, 3, 4, 7 and 2 |
2004-11-05 |
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From Christine:
what is the lcm of 5,3,4,7,2
Answered by Penny Nom. |
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42.5 is what % of 170? |
2004-11-05 |
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From Dawn:
42.5 is what % of 170?
Answered by Penny Nom. |
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The points of intersection of two graphs |
2004-11-05 |
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From Benjamin:
How do I find the points of intersection of the two functions:
1) y =
2 - e-x
2) y = 1 + x2
Answered by Harley Weston. |
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Probabilities in poker |
2004-11-04 |
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From Ben:
Please can someone tell me the odds of getting a royal flush while playing texas hold em.
Please can you also let us know the odds of a royal flush while playing texas hold em if you must be dealt two of the needed cards.
Answered by Chris Fisher. |
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The least common denominator |
2004-11-03 |
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From A student:
Write the LCD for each pair of fractions.
13. 1/3,1/5
14. 2/7,1/4
15. 3/4,3/5
Answered by Penny Nom. |
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