Science & Mathematics - 28 November 2007

{x - 5y = 3
{9x - 6y = 51

a. (6, 3)
b. (-7, 3)
c. (7, 2)
d. no solution

2007-11-28 23:57:43 · 6 answers · asked by . 1 in Mathematics

2007-11-28 23:55:22 · 15 answers · asked by Yao 1 in Weather

This was in one of my homework assignments: There seems to be a reason why... DOES ANYONE KNOW???

Thanks in advance for helping!

2007-11-28 23:48:33 · 2 answers · asked by KCWS 2 in Other - Science

If the speed of light is the same if we move or not, according to Einstein, then why do we see a redshift if the light source is moving away at great speed? Or am i confusing speed with wavelength now?

2007-11-28 23:38:46 · 2 answers · asked by me c 2 in Physics

True OR false?
Lim k-->∞ [1/(k(k+2))] < lim k-->∞[5/(k^2)]?

This can be rewritten as:
Lim k-->∞ [1/(k^2+2k))] < lim k-->∞[5/(k^2)]?

2007-11-28 23:30:03 · 12 answers · asked by RogerDodger 1 in Mathematics

I was trying to draw a electronic diagram of SO3. S, which has bonded with 3 O, got 9 electrons in its outermost shell. So, would it transfer a electron to the O which need it? Also, should I fill the atom with a higher ability to gain electrons first? Like N and O, they are in the same period, but O have more protons, so I need to fill O to 8 electrons first and the N gain 1 from other particle and form a polyatomic ion with a charge of 1-. Am I right?

2007-11-28 23:23:29 · 1 answers · asked by Anonymous in Chemistry

2007-11-28 23:23:00 · 1 answers · asked by Josh 2 in Engineering

2007-11-28 23:13:10 · 3 answers · asked by Adrian 1 in Physics

I can't seem to find any kind of formula anywhere. all i got is that its made up of water, casein, fat, etc... if anyone knows a possible formula for any type of milk, it would really help me (by the way its an independent assignment for school). Any formula will be fine with me

2007-11-28 23:10:30 · 2 answers · asked by The Gildclam 2 in Chemistry

please let me know yar.........

2007-11-28 23:10:17 · 3 answers · asked by Anonymous in Chemistry

Hi all,
I want know details about Silica Gel. What is raw material, production process, what are the type of silica gel etc., Could anyone help me. Thanks in advance. Renga

2007-11-28 23:10:13 · 6 answers · asked by Renga N 1 in Chemistry

2007-11-28 23:02:50 · 2 answers · asked by Amy 1 in Chemistry

2007-11-28 23:00:35 · 6 answers · asked by Anonymous in Chemistry

2007-11-28 22:56:10 · 1 answers · asked by hormone act only at there target 1 in Zoology

I mapped it out to be 8/16 but this must be wrong. Is it?

2007-11-28 22:43:12 · 11 answers · asked by conda 6 in Mathematics

2007-11-28 22:39:42 · 3 answers · asked by Anonymous in Mathematics

There doesn't appear to be anyone selling ignition fuses on Ebay, where else can I buy either rolls or strips of fuse?

Have these fuses got a specific name that I should know about?

2007-11-28 22:35:02 · 4 answers · asked by zyckle 1 in Chemistry

2007-11-28 22:22:12 · 43 answers · asked by ashi 1 in Chemistry

I have heard that in North Pole and South Pole area, there is 6 months days and 6 months night. This means that for 6 months in a year there is continuous day(continuous sunlight) and six months continuously there is dark and night and no sun seen...is this true.

2007-11-28 22:19:29 · 5 answers · asked by aMIT 6 in Geography

A-tow way switch B-one way switch C-doubel pole wall switch D- dobule pole pull cord switch

2007-11-28 22:07:56 · 8 answers · asked by Muharrem Z 1 in Engineering

please help me. XD

2007-11-28 22:05:08 · 3 answers · asked by jade adeline 1 in Zoology

2007-11-28 22:03:01 · 11 answers · asked by patrice j 1 in Earth Sciences & Geology

i need the detailed process of air seperation for oxygen plant ...

2007-11-28 21:55:08 · 4 answers · asked by Anonymous in Chemistry

Calculate the number of moles in 37.8mL of 1.5M HCl and express the answer with the correct number of significant digits.

Can someone show me how to do this?

2007-11-28 21:54:38 · 4 answers · asked by Chris #326 1 in Chemistry

2007-11-28 21:51:54 · 8 answers · asked by Julie C 1 in Parapsychology

are we disapointment (hopless) for doing nothing for this blue beatiful planet (earth)?
we wait destruction of this planet?

2007-11-28 21:48:31 · 3 answers · asked by sangoku sangoku 2 in Earth Sciences & Geology

http://news.bbc.co.uk/1/hi/sci/tech/7116834.stm

2007-11-28 21:43:32 · 21 answers · asked by John Smith 1 in Astronomy & Space

For the reaction N2(g)+3H2(g) = 2NH3(g)


Kp = 5.60×10−3 at 258 degrees C. What is the K for the reaction at this temperature?

2007-11-28 21:42:58 · 5 answers · asked by Anonymous in Chemistry

2007-11-28 21:39:47 · 1 answers · asked by thaha t 1 in Chemistry

The theorists say this is what wiped out the dinosaurs. We've seen it popularized in movies and it looks truly terrifying. I know we have some kind of global vigil going on to track large space objects as they might impact Earth. But are we really geared up enough to catch this in the skies before we get hit? Would we be able to divert a direct hit with our current capabilities in outer space? Would it take an atomic bomb to dessentigrate or vaporize one of these large asteroids or meteorites on it's way to Planet Earth? If we are not adequately prepared now, what do we need to do to safeguard the future of our planet from a disaster of this magnitude?

2007-11-28 21:35:08 · 19 answers · asked by John S. 5 in Astronomy & Space