Science & Mathematics - 31 July 2007

(1/3 x^2 * 9 -99/x)

Can some1 plzz explain this in easy steps? i cant solve this qwestion. thanx!!

2007-07-31 09:24:12 · 8 answers · asked by playerr 3 in Mathematics

2007-07-31 09:22:39 · 16 answers · asked by Cassidy T 1 in Zoology

Finding the roots of a quadratic equation with leading coefficient greater than 1:

4y^2=2y+6

(If there is more than one solution, separate them with commas.)

2007-07-31 09:22:13 · 6 answers · asked by Anonymous in Mathematics

if you put a hot drink in a thermos flask it keeps it hot - if you put a cold drink in in keeps it cold. How does it know whether it has to keep something hot or whether it should keep it cold? also can you buy separate thermos flasks - one that only keeps things hot and one that only keeps things cold - to avoid any confusion?

2007-07-31 09:22:00 · 7 answers · asked by Anonymous in Chemistry

I know our blood smells like metal because we have Iron in it. But it got me thinking...why is Iron and our blood and not any other metal. What is it about Iron that makes me better for us than anything else. I think I remember learning that Iron is a chelating agent, so is that the only reason?

Thanks!

2007-07-31 09:19:33 · 9 answers · asked by Tropical Mango 2 in Medicine

2007-07-31 09:12:43 · 7 answers · asked by ? 1 in Medicine

is it Einstein?

2007-07-31 09:10:27 · 17 answers · asked by Siu02rk 3 in Other - Science

2007-07-31 09:06:13 · 7 answers · asked by willie joe m 1 in Mathematics

2007-07-31 09:05:08 · 8 answers · asked by moodycoach1 1 in Earth Sciences & Geology

q(x)= ln(x+3) - ln(x-5)

2007-07-31 09:02:15 · 2 answers · asked by c 1 in Mathematics

10x-4y=24

How do I solve this!?

2007-07-31 09:01:58 · 6 answers · asked by Anonymous in Mathematics

Perform the indicated operation. Simplify if possible.

(3) / (x) - 8 ) + ( 22 ) / ( 8 - x )

2007-07-31 09:01:15 · 2 answers · asked by Anonymous in Mathematics

2007-07-31 08:59:34 · 4 answers · asked by Amber 1 in Mathematics

1.) cos^-1(sqrt(3)/2)
2.) tan(210°)
3.) cos(0)
4.) cos(45°)
5.) csc(-5pi/6)
6.) sec(-180°)
7.) cot(-pi/2)
8.) sin^-1(1/2)
9.) tan(pi/2)

2007-07-31 08:59:15 · 2 answers · asked by b country90 1 in Mathematics

2007-07-31 08:57:35 · 4 answers · asked by What is Corpora Quadrigemina? 1 in Medicine

In the state of CT, there exists Powerball for which six numbers must be chosen out of a pool of 75 numbers. No two numbers can be chosen twice. Is it possible to play every numerical combination to gurantee a wim of more than 11 million dollars.

2007-07-31 08:50:53 · 5 answers · asked by Anonymous in Mathematics

2007-07-31 08:50:09 · 6 answers · asked by tmac5445 1 in Engineering

Write the equation of a circle with endpoints of the diameter at (2, -5) and (-4, 3).
Show your work for credit.

Thanks, I looked into the lesson, and i cant figure this out, every time i follow the formula, I seem to get it wrong, Please help with this one. I would really appreciate it!

Thanks To All!

2007-07-31 08:44:07 · 4 answers · asked by Triock91 1 in Mathematics

2 - (9u+4z / 3u) + (u+6z / 8u)

Express as a single fraction in lowest terms

2007-07-31 08:36:53 · 6 answers · asked by Amy 1 in Mathematics

2007-07-31 08:36:42 · 11 answers · asked by Anonymous in Mathematics

Dr. Terry Efird also works in Berryville, Arkansas.

2007-07-31 08:31:06 · 2 answers · asked by P H 1 in Medicine

...but I don't recall any such surgery. What should I do?

2007-07-31 08:30:17 · 7 answers · asked by Anonymous in Medicine

2007-07-31 08:28:05 · 12 answers · asked by roc9869 1 in Earth Sciences & Geology

ok so does anyone know how to prove that the diagonals of a kite are perpendicular?

2007-07-31 08:25:43 · 5 answers · asked by balla24 1 in Mathematics

I need an explanation as to how it allowed for biological success.

2007-07-31 08:25:29 · 1 answers · asked by gamecock320 2 in Botany

2007-07-31 08:24:44 · 6 answers · asked by zeth61592 1 in Zoology

2007-07-31 08:21:16 · 16 answers · asked by sparkle 5 in Astronomy & Space

2007-07-31 08:18:10 · 12 answers · asked by Miguel B 1 in Mathematics

at harry's discount hardware everything is sold for 20% less than the price marked. If harry buys tool kits for $80, what price should he mark them if he wants to make a 20% profit on his cost?

2007-07-31 08:15:58 · 4 answers · asked by sharizzle 1 in Mathematics

a. o-dimethylbenzene
b. m-dimethylbenzene
c. p-dimethylbenzene
d. all of the above

2007-07-31 08:13:17 · 3 answers · asked by dave b 2 in Chemistry