Mathematics - 8 November 2007

yet takes an hour longer. What are the two planes speed.

How do I tabulate this problem. I got up to 3 and 10, but don't get it, maybe I did it wrong.

I mean I got to the part where (t-10)(t-3) so....600/3 and 1000/3?

2007-11-08 23:40:26 · 9 answers · asked by Anonymous

6s^(-1) + 5s + 20 = A(s+1) + B

Thanks.

2007-11-08 23:30:29 · 3 answers · asked by Anonymous

2007-11-08 23:24:12 · 26 answers · asked by Anonymous

2007-11-08 23:23:00 · 6 answers · asked by danny r 1

One of my kids came home from school with this problem from her maths teacher, and I can't think of a way to explain it :

A train is going west to east at 100mph
A fly is flying east to west at 5mph
The fly hits the trains windscreen
The movement of the fly therefore changes from east-west to west-east (in effect it changes direction 180°)
So there must be a moment when the fly's velocity is zero
That moment comes when the fly hits the train
So if the fly's velocity is zero when it's touching the train, then so must be the train's velocity
So the fly has stopped the train

This reminds me of that one where if you shoot an arrow at a tortoise it will never hit it because by the time the arrow has got to where the tortoise was, the tortoise has moved on a bit. I can't explain that one either!

Please help me get back some Dad-cred by explaining what's going on!

2007-11-08 22:58:58 · 16 answers · asked by Anonymous

2007-11-08 22:55:06 · 2 answers · asked by Anonymous

y'' -16y = 2e^(2x), y(0) = -1/6, y'(0) = 2/3

Particularly concentrate on what am supposed to do with initial values / where to substitute them etc...

2007-11-08 22:39:10 · 1 answers · asked by Anonymous

integral de dx/(3x^3 + 2x^2 + 3x + 2)

ya yo hallé por tanteo, el valor de x cuando el denominador lo igualo a cero, porque no me sé ningún otro método y la expresión se queda así:
3x^3 + 2x^2 + 3x + 2 = [x + (6/9)]·(3x^2 + 3)
pero para hallar más soluciones de x ya me salen soluciones imaginarias. Si conocen otro método de resolución o seguir resolviéndola desde donde yo la dejé les doy 10 puntitos. Gracias.
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integral of dx/(3x^3 + 2x^2 + 3x + 2)

Do you know any method to solve it ? 10 points who solve this step by step please. Thank you so much friend

2007-11-08 22:35:07 · 2 answers · asked by Anonymous

2007-11-08 22:24:47 · 12 answers · asked by Anonymous

2007-11-08 21:43:06 · 10 answers · asked by mohammad s 1

lim: n^(1/2)*(1-ln((1+1/n)^n))

How do I show this sequence converges to zero? It would be so easy if that n^(1/2) wasn't there since ln((1+1/n)^n)->ln(e)=1

But I'm stuck and I don't know what to do.

Maybe it's easier if you write it as:
n^(1/2) *(1- n*ln(n+1) +n*ln(n))

Any help would be greatly appreciated

2007-11-08 20:53:03 · 3 answers · asked by greeneggs4spam 3

I have a feeling I'm just making this more difficult than it really is.

2007-11-08 20:33:24 · 2 answers · asked by **Tx32** 2

I have asked this question by someone. please provide me the next three digit with any option. I hope our mathematics experts can help me.

regards/Nak

2007-11-08 19:47:35 · 9 answers · asked by Spider S 1

no idea

2007-11-08 19:44:24 · 9 answers · asked by Anonymous

i need help finding the secant line from ( a, f(a) ) to ( b, f(b) ) and then the tangent line that is parallel to the secant line.
f(x) = x + (1/x) [ .5, 2 ]

2007-11-08 19:05:52 · 1 answers · asked by sniper88gt 1

http://i40.photobucket.com/albums/e215/xxs3xp1stolxx/Algebra%20II/album%20name/407a/Picture11.png

2007-11-08 18:40:46 · 3 answers · asked by Ant J 1

http://i40.photobucket.com/albums/e215/xxs3xp1stolxx/Algebra%20II/album%20name/407a/Picture9.png

2007-11-08 18:39:09 · 4 answers · asked by Ant J 1

Q: Equation for each prabola.

focus (-4,-2)
Dicrectix x= -8

2007-11-08 18:24:07 · 2 answers · asked by Kennedy 1

please show work if possible

1. how many squares of various sizes are in s six-by-six square?

2. find the sum of the reciprocals of the first five positive powers of three. express your answer as a common fraction

2007-11-08 17:47:47 · 3 answers · asked by Osamu Miyawaki 1

http://i40.photobucket.com/albums/e215/xxs3xp1stolxx/Algebra%20II/album%20name/Picture9.png

solve the system of equations

2007-11-08 17:46:16 · 4 answers · asked by Esther R 1

1) r2-5r+6/r2-4 How would i simplify that
2) f(4) = 0 and f(6) = 6, which of the following could represent f(x) The answer is 3x-12, but i do not know y thats the answer.
3) This year, 75% of the graduating class of Harriet Tubman High School had taken at least 8 math courses. Of the remaining class members, 60% had taken 6 or 7 math
courses. What percent of the graduating class had taken fewer than 6 math courses?
4) In an arithmetic series, the terms of the series are equally spread out. For example, in
1 + 5 + 9 + 13 + 17, consecutive terms are 4 apart. If the first term in an arithmetic series is 3, the last term is 136, and the sum is 1,390, what are the first 3 terms?

5) Listed below are 5 functions, each denoted g(x) and each involving a real number constant
c > 1. If f (x) = 2x, which of these 5 functions yields the greatest value for f (g(x)), for all
x > 1 ?
A. g(x) = cx
B. g(x) = c/x
C. g(x) = x/c
D. g(x) = x – c
E. g(x) = logcx
Can u explain!

2007-11-08 17:25:50 · 5 answers · asked by bluesky777 1

Find the lengths of the hypotenuse and the altitude to the hypotenuse.

Please explain. Thanks a lot.

2007-11-08 17:07:50 · 4 answers · asked by Anonymous

http://i40.photobucket.com/albums/e215/xxs3xp1stolxx/Algebra%20II/album%20name/Picture7.png

2007-11-08 17:07:21 · 1 answers · asked by Anonymous

http://i40.photobucket.com/albums/e215/xxs3xp1stolxx/Algebra%20II/album%20name/Picture4.png

2007-11-08 17:04:06 · 1 answers · asked by Anonymous

Explain please. Thank you.

2007-11-08 17:01:30 · 4 answers · asked by Anonymous

http://i40.photobucket.com/albums/e215/xxs3xp1stolxx/Algebra%20II/album%20name/Picture2.png

2007-11-08 16:59:03 · 5 answers · asked by Anonymous

Can you simplfy 6/9?

2007-11-08 16:14:10 · 13 answers · asked by Anonymous

a) passing through pts (8,-2), (6,2) and (3,-7)

b) passes through the origin, radius=10 and abcissa of the center is -6.

2007-11-08 16:05:03 · 3 answers · asked by Anonymous

Does this include negatives like (-9)^0
wouldnt it be -1
if its just 1 how can it be the same as (9)^0 if they are opposites.
I dont understand the 0 exponent at all!!

2007-11-08 15:57:42 · 6 answers · asked by Anonymous

http://i40.photobucket.com/albums/e215/xxs3xp1stolxx/Algebra%20II/album%20name/Picture7.png

2007-11-08 15:52:03 · 11 answers · asked by Anonymous