Science & Mathematics - 23 August 2007

where i live we very rarely see either.

2007-08-23 11:34:56 · 3 answers · asked by Anonymous in Weather

A) 2x^2+x-12=0


B) 4x^2-2x=7



Please show all the steps so i understand for other questions

2007-08-23 11:20:24 · 4 answers · asked by erin j 2 in Mathematics

but do any of you also feel that "time" is going much much faster than it ever used to? what do you think this sense of time going so fast is associated with?

2007-08-23 11:17:32 · 8 answers · asked by waterlily750 4 in Physics

Trying to figure out what is the farthest location from Southern California I can ship to in the US. I am trying to figure out worst case scenario shipping costs.

2007-08-23 11:14:07 · 5 answers · asked by Anonymous in Geography

2007-08-23 11:07:00 · 5 answers · asked by Anonymous in Biology

Just part of a Chem. question.

If the molarity of acetic acid is 0.01735 moles/liter, what is the percent acidity of 10.23 mL vinegar?

P.s.- Acetic acid is 60 grams per mol.

2007-08-23 11:06:38 · 2 answers · asked by Anonymous in Chemistry

how do hurricanes get their names

2007-08-23 10:59:24 · 16 answers · asked by Anonymous in Weather

2007-08-23 10:56:42 · 2 answers · asked by Anonymous in Mathematics

2007-08-23 10:51:36 · 1 answers · asked by rio 1 in Weather

2007-08-23 10:49:54 · 11 answers · asked by nicholas b 2 in Physics

2007-08-23 10:45:00 · 2 answers · asked by UNC#1 1 in Zoology

sience only proves stuff from the real world so i'm not sure if the anti universe is part of the real world i just wanna know if sience could prove the anti world is real

2007-08-23 10:38:47 · 7 answers · asked by Anonymous in Astronomy & Space

2007-08-23 10:37:49 · 4 answers · asked by Anonymous in Mathematics

9 over 7 + -2 3 over 14

2007-08-23 10:34:08 · 11 answers · asked by Mikey A 1 in Mathematics

2007-08-23 10:33:57 · 8 answers · asked by Anonymous in Mathematics

2x^2 + 4
-----------
2x

2007-08-23 10:31:06 · 3 answers · asked by Anonymous in Mathematics

how do i tackle the above?

what is the step by step guide?

2007-08-23 10:29:30 · 8 answers · asked by Anonymous in Mathematics

I know the Jacobi symbol is typically all we can work with for composite N when attempting to discern whether a given residue A is a quadratic residue mod N.

However, what if we have a composite N with a special property (it will thus be a pseudoprime to base A): what if A^((N-1)/2) actually IS congruent to either 1 or -1 even though N is composite? Would this always be an accurate result for whether or not A is a quadratic residue mod N?

In other words, if A^((N-1)/2) mod N does equal 1, does that mean A is necessarily a quadratic residue mod N even for composite N? If it equals -1, does that mean A is necessarily a quadratic nonresidue mod N even for composite N?

2007-08-23 10:26:15 · 1 answers · asked by Anonymous in Mathematics

For school I have to make a tower structure thingie, I get a roll of tape ,scissors, and as many straws as I need. Tallest wins Please Help! Also, for another assignment I get on peice of regular size paper, tape, and scissors. Again Tallest Wins! PLEASE HELP!!!!!!!!!!

2007-08-23 10:25:54 · 2 answers · asked by *Gold is Glam* 1 in Engineering

I thought I remembered learning this but when I worked it out,
I don't think I did it right,
so if you could help, and show the steps how you did it,
that would be great!! :)
Here's the problem:

3(4y-5)=69


thankyou again!

2007-08-23 10:17:33 · 20 answers · asked by sil. 2 in Mathematics

I need 3 phase power to hook up my machine and I believe this outlet is a 3-phase but I am not sure. Thanks!

2007-08-23 10:13:34 · 7 answers · asked by Dan F 1 in Engineering

If you assume there are three significant figures in the number, would 72,000 = 7.20 x 10^2 or 7.20 x 10^4? The significant numbers should be the "7,20" right?

If you write the following in standard, nonexponential form would 3.86 x 10^-6 = 0.00000386?

If you write that same number in common decimal form, is it the same? If so, why would it be specified to write them in "common decimal" instead of "standard, nonexponential" form?

Man, I thought I understood this stuff when I left class, haha...

2007-08-23 10:07:02 · 5 answers · asked by Anonymous in Mathematics

No, that is not exactly correct. While it is true that one characteristic of the common collector (emitter follower) is that its voltage gain is very nearly unity, its current gain can be much higher (equal to Beta in fact) and it can demonstrate a "power gain" as a result.

In the common collector (emitter follower) configuration,
!!!!!current gain = Ie / Iin, Beta(ac)!!!!!! is the maximum achievable current gain in both common-collector and common-emitter amplifiers.

Source(s):

self

Electronic Devices: Electron Flow Version/ 5th. Edition, by Floyd
??????

2007-08-23 10:03:52 · 3 answers · asked by Doopy D 1 in Engineering

What subjects should I take, or what subjects do I need to apply for colleges? I tried to do a bit of research on different websites, but I would really appreciate someone's advice. (so subjects for medicine)

2007-08-23 10:03:50 · 4 answers · asked by Anonymous in Medicine

2007-08-23 09:59:57 · 3 answers · asked by Sky Blue Waters ! 7 in Earth Sciences & Geology

2007-08-23 09:59:42 · 6 answers · asked by Shane H 1 in Mathematics

2007-08-23 09:57:14 · 5 answers · asked by Anonymous in Astronomy & Space

2007-08-23 09:51:56 · 11 answers · asked by JR e 1 in Physics

2007-08-23 09:50:10 · 7 answers · asked by Crisamar M 1 in Mathematics

a(3tx-2b)=c(dx-2)?

2007-08-23 09:48:23 · 4 answers · asked by [xo♥ox] 1 in Mathematics