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A pentagon inscribed in a circle |
2008-03-19 |
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From Elaine:
My question as written on my homework is: Given a pentagon inscribed in a circle of radius r, determine a) the angle between any two sides of the pentagaon b) the perimeter of the pentagaon c) the area of the pentagon. I know this kind of counts as three questions, so if you can only answer one, that's okay. Any help will be much appreciated. Thanks!
Answered by Stephen La Rocque. |
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The product of the roots |
2008-03-19 |
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From Rebecca:
Determine the product of the roots of the equation
(x-1)(x-2) + (x-2)(x-5)=0
Answered by Penny Nom. |
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The area of a right triangle |
2008-03-19 |
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From Tate:
I need to find the area of a right triangle. I already know that the formula would be a squared + b squared = c squared. However, I only have the length of the hypotenuse and the base.
Answered by Victoria West. |
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Equivalence relation |
2008-03-19 |
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From Hmod:
State with reasons, whether the relation R on N X N given by mRn
if m and n have difefrent remainders on division by 2 is an Equivalence
relation
Answered by Victoria West. |
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4,12,24,40,60,84 |
2008-03-18 |
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From kirsty:
Here are the first six terms of a sequence.
4,12,24,40,60,84
Find in terms of n, an expression for the nth term of teh sequence.
Answered by Stephen La Rocque. |
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Distance seen |
2008-03-18 |
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From Nev:
formule: Distance Seen
S = 1.225 x square root of H
S = Distance seen in Miles
H = Height in Feet
What dose 1.225 Relate To ?
Answered by Stephen La Rocque. |
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What was the annual interest rate? |
2008-03-18 |
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From Javier:
A business invests $10,000 in a savings account for two years. At the beginning of the second year, and additional $3,500 is invested. At the end of the second year, the account balance is $15,569.75. What was the annual interest rate?
Answered by Penny Nom. |
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A pen with 40 post on each side |
2008-03-18 |
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From Manpreet:
how many post do you need to make a pen with 40 post on each side
Answered by Penny Nom. |
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Graph the equation P(x)= x^3 + x^2 -12x |
2008-03-18 |
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From Sean:
I want to graph the equation : P(x)= x^3 + x^2 -12x I was thinking that I would combine
the x-values, but then I could not use the complete the square technique. Would I have to
just solve the second half of the equation and then graph x^3 seperately
Answered by Penny Nom. |
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Average and mean |
2008-03-17 |
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From A student:
Mean and average are the same propeties of the set of elements, if there is average then why mathematician need the mean ?
Answered by Penny Nom. |
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n^3/3 + n^5/5 + 7n/15 is an integer |
2008-03-17 |
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From John:
Prove: For all n in Natural Numbers ( n > 1 ),
n^3/3 + n^5/5 + 7n/15 is an integer
Answered by Stephen La Rocque. |
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Any regular polygon inscribed in a circle |
2008-03-17 |
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From lindsay:
how do find the perimeter of a regular octagon inscribed in a circle with a radius of 5 units
Answered by Stephen La Rocque. |
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2^n > n^2 for n> 4 where n is a natural number |
2008-03-17 |
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From John:
I've been asked to prove this:
2^n > n^2 for n> 4 and n is a natural number
Answered by Penny Nom. |
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Twenty golfers |
2008-03-16 |
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From john:
I have a group of 20 golfers. We plan on playing 6 rounds of golf in 4 days. I would like to have the most possible combinations of players without each player playing with anyone if possible, in the 4 days of golf
Answered by Victoria West. |
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The sum and product of the roots of a quadratic |
2008-03-16 |
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From Katelyn:
Write the quadratic equation....
Sum of the roots = 16
Product of the roots = -80
Answered by Penny Nom. |
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