Science & Mathematics - 27 July 2007

2007-07-27 07:52:31 · 4 answers · asked by Anonymous in Chemistry

2007-07-27 07:50:42 · 6 answers · asked by bikejon 1 in Physics

I need to simplify:

[ ( a / b ) - a ] / [ a + ( a / b ) ^2 ]

so that it equals:

[ b ( 1 - b ) ] / [ b^2 + a ]

Please help, and show working with explanation if necessary.

2007-07-27 07:46:19 · 4 answers · asked by dixie4x42000 2 in Mathematics

There are several proofs. The one I like best is based on the inequality e^x >= x for every real x, with equality if, and only if, x = 0.

2007-07-27 07:44:54 · 3 answers · asked by Steiner 7 in Mathematics

2007-07-27 07:32:36 · 2 answers · asked by namso141 3 in Chemistry

2007-07-27 07:27:24 · 5 answers · asked by Anonymous in Zoology

2007-07-27 07:20:28 · 7 answers · asked by LASHANDA F 1 in Mathematics

2007-07-27 07:18:47 · 9 answers · asked by LASHANDA F 1 in Mathematics

2007-07-27 07:18:05 · 6 answers · asked by AndrewpH 1 in Weather

http://alexandersemenov.tripod.com/ya/vrtr/index.htm

The frame can slide on the flat top of the desk.
Two red rods of length 30 can revolve around fixed point A and one green rod of lenght 2 can revolve around fixed pont B, |AB| = 34.

The lenght of four blue rods is 18 each.

What is the area of the loop made by joint C, after green rod completes one revolution?

2007-07-27 07:18:03 · 3 answers · asked by Alexander 6 in Mathematics

multiply in simplest form

2007-07-27 07:16:44 · 7 answers · asked by LASHANDA F 1 in Mathematics

2007-07-27 07:15:22 · 5 answers · asked by LASHANDA F 1 in Mathematics

any triangle is congruent to itself. Explain how this observation can be used to prove the isoceles triangle theorem.

if anyone can help that would be great. I really cant figure this out.

This is another question i had problems with so if u can help with this id appreciate it.

Prove that the square root of 13 is irrational. I know that 3n^2=m^2 but how would this prove its irrational??

2007-07-27 07:14:53 · 2 answers · asked by moooona1987 2 in Mathematics

Does the following set of ordered pairs express the first variable as a function of the second variable?
{(3, 4)(-3, 2)(3, -3)(-3, -4)(1, -1)(-1, -3)}

A. yes
B. no

2007-07-27 07:07:06 · 6 answers · asked by just me 1 in Mathematics

http://en.wikipedia.org/wiki/Thermocouple

2007-07-27 07:04:54 · 3 answers · asked by jimschem 4 in Engineering

When doing say a clinical test, how long should be made if a subject is being tested on a chemical such that we increase the dose by 3x until we see effects?

The object of this test is to establish how much of a given chemical if at all it takes to have an effect on the body.
But a curtian amount of recovery time is needed to watch for withdrawl symptoms?

CREED

2007-07-27 07:03:43 · 2 answers · asked by Anonymous in Medicine

I have a small Bonsai tree that I'm cultavating and if memory serves me correctly some produce miniature rose like flowers.If one could elaborate please do so.

2007-07-27 07:01:16 · 5 answers · asked by TREY 1 in Botany

2007-07-27 07:00:53 · 6 answers · asked by Anonymous in Mathematics

does it really have to do with math?

2007-07-27 06:59:26 · 4 answers · asked by Anonymous in Mathematics

It was steet lightning, about 2 miles from where I was, it was huge, traveling a quarter of the way across the sky.

2007-07-27 06:57:28 · 3 answers · asked by John R 2 in Weather

Solve the following compound inequality and express the answer in interval notation. 2x < 10 and -5x < 5 No spaces please!

2007-07-27 06:56:15 · 5 answers · asked by just me 1 in Mathematics

2007-07-27 06:56:05 · 5 answers · asked by shivanand mogha 1 in Mathematics

(1) x = 3y - 2
2x + 4y = 16

(2) 2x + y = 7
5x - 2y = 4

2007-07-27 06:54:33 · 6 answers · asked by Anonymous in Mathematics

I'm a junior in high school.
Got straight A's in all subjects,
taking dual-credit college classes (got mostly A's in those),
have plenty of volunteer hours,
I'm in student council,
and am planning to graduate with a associate's degree (which is very rare for a high school student).

I want to go to MIT's biological engineering program, but I want to know if ya'll think I can make it? What am I missing?

2007-07-27 06:48:43 · 6 answers · asked by Angel_Wolf 2 in Engineering

(1) 4x + 2y = 8
2x + y = 1

(2) x + y = 4
2x - y = -7

2007-07-27 06:46:42 · 4 answers · asked by Anonymous in Mathematics

...if a leaf or a rock fell in the forest would there be a sound if no one was there to hear it? Is everything a mute outside of any hearing range?

2007-07-27 06:44:40 · 7 answers · asked by Anonymous in Physics

2007-07-27 06:43:47 · 4 answers · asked by happygirl25 2 in Physics

2007-07-27 06:43:29 · 4 answers · asked by maxine e 1 in Chemistry

2007-07-27 06:43:00 · 8 answers · asked by V.S. 2 in Mathematics

I'm thinking..

1) Fire because there's anger in some love.
2) Earth because we're relaxed in love.
3) Air because we live for love.
4) Water because there's jealousy in love.

But I'm pretty shure that I'm not right. But anybody who knows or would like to try please tell me.

2007-07-27 06:41:38 · 11 answers · asked by Anonymous in Astronomy & Space