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1/(1x2)+1/(2x3)+1/(3x4)...+1/(n(n+1)) |
2008-02-20 |
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hossun pose la question :
Find a formula for 1/(1x2)+1/(2x3)+1/(3x4)...+1/(n(n+1))
by examining the values of this expression for small values of n.
Use mathematical induction to prove your result.
Stephen La Rocque lui répond. |
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A fractional inequality |
2008-02-20 |
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ed pose la question :
solve the inequality
(x+3)^2 (2-x)
___________ < 0
(x+4) (x^2 - 4)
Penny Nom lui répond. |
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Decimal fraction to mixed number |
2008-02-20 |
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cristian pose la question :
write 7.62 as a mixed number
Penny Nom lui répond. |
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Nonagon |
2008-02-20 |
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Austin pose la question :
For the life of me I cannot find an object shaped like a nonagon. Do you know of any examples?
Thanks!
Stephen La Rocque lui répond. |
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18x=6(x*x) |
2008-02-20 |
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peyton pose la question :
18x=6(x*x)
Stephen La Rocque lui répond. |
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Factoring a trinomial |
2008-02-20 |
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Adrienne pose la question :
a field an rea of (x^2+x-6) square metres. State expressions for its length and width.
Penny Nom lui répond. |
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Peg has 12 more cases to unload than Mike |
2008-02-20 |
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brianda pose la question :
Peg has 12 more cases to unload than Mike. They have a total of 150 cases to unload. How my cases does each have to unload?
Penny Nom lui répond. |
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Find the next terms |
2008-02-20 |
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Darrin pose la question :
I was given a number sequence and can't figure out the next terms to this
2,9,20,35,66,91......
Penny Nom lui répond. |
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How many feet deep to make a 2 acre plot? |
2008-02-19 |
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Bob pose la question :
If you have a piece of property that is 265.15 wide, how many feet deep to make a 2 acre plot and how deep to make a 3 acre plot.
Stephen La Rocque lui répond. |
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A step pyramid |
2008-02-19 |
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Patty pose la question :
On a step pyramid - do you count each side of the step as a face?
- and each corner a vertex? - How do I find the volume of a step pyramid?
Stephen La Rocque lui répond. |
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exercice de trigonométrie |
2008-02-19 |
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Maxime pose la question :
Montrer que dans un triangle quelconque le produit des cosinus des angles
cosA*cosB*cosC est inférieur ou égal à 1/8.
Pierre-Louis Gagnon et Thierry Moisan lui répond. |
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Two right triangles |
2008-02-18 |
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Amy pose la question :
Hi, I have a problem that has me stumped.
There are two right triangles that share the same adjacent side (AB) which
is 240'. The right angles of each triangle are at the opposite ends of the
shared side.
The Opposite side (AC) of Triangle ABC is 180'
and the Hypotenuse (CB) is 300'.
The Opposite side (BD) of Triangle ABD is 100'
and the Hypotenuse (AD) is 260'.
How do I figure out where the hypotenuses intersect?
Stephen La Rocque and Harley Weston lui répond. |
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A complex quadratic |
2008-02-18 |
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Ash pose la question :
z^2-(6+2i)z+(8+6i)=0
Solve for Z
Steve La Rocque and Penny Nom lui répond. |
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How much does water weigh per gallon? |
2008-02-18 |
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sofie pose la question :
how much does water weigh per gallon
Penny Nom lui répond. |
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The area of a right triangle |
2008-02-18 |
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ASHLEY pose la question :
WHAT IS THE AREA OF A RIGHT TRIANGLE? WITH THE SHORT SIDE
BEING 16 AND THE HYPOTENUSE 20?
Penny Nom lui répond. |
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