Science & Mathematics - 17 August 2007

2007-08-17 09:33:07 · 10 answers · asked by Virtuous Woman 1 in Mathematics

help me how to find precents and do this problem

2007-08-17 09:27:56 · 10 answers · asked by Anonymous in Mathematics

1/4=2x/3

please help thanks!

2007-08-17 09:26:04 · 12 answers · asked by Chelsea M 3 in Mathematics

The Lake Issabella Dam is rated the unsafest in the country yet the riverbeds in Bakersfield are bone dry. Why not trickle more water down, thus easing the pressure on the Dam and making Bakersfield and it's Parks a more inviting place. I have lived her 5 yrs and only one summer was there water in the river all summer. I have heard them say that we would have water in the river from now on more than once only to see them dry once again.

2007-08-17 09:25:02 · 2 answers · asked by Msusiecu 1 in Geography

There is a valve
http://upload.wikimedia.org/wikipedia/en/4/4f/USPatent6518683.png
installed in the 'middle' of the pipe.

What will be the force acting on the valve, if we intantly close it, and block water flow?

2007-08-17 09:23:16 · 4 answers · asked by Alexander 6 in Physics

2007-08-17 09:22:52 · 12 answers · asked by Anonymous in Mathematics

Brain activatity continues after death is this true?

2007-08-17 09:22:36 · 5 answers · asked by runescape sucks 3 in Biology

The sum of two numbers is 35. Their difference is 11. What are the two numbers?

That's it......hope someone can help on these....have done 40 problems already....brain dead

2007-08-17 09:20:54 · 9 answers · asked by Robert S 1 in Mathematics

Combined with chlroine, it produces a compound essential to life (I was thinking Sodium?)

A metal that occurs in vast limestone deposits and combines with oxygen to form an oxide with a formula MO.

The transition element at the center of hemoglobin

Used in smoke detectors and named for the United States

A component of washing powder mined in Death Valley

The basis for the compounds that make up all living thins

Primary constituent of pencil lead

The last element in the Periodic Table that is not radioactive

Exists as X4 molecules

The element named after the sun, where it was first detected


Thanks for the help guys.

2007-08-17 09:18:33 · 2 answers · asked by Hunter 2 in Chemistry

rewrite the equation 2x-3y= -6 as a function of x.

2007-08-17 09:16:20 · 6 answers · asked by blue_eyed_woman_23 3 in Mathematics

in nevada

2007-08-17 09:12:38 · 26 answers · asked by helper999 2 in Geography

Will it be possible to have a 'telephone'(type) chat with a fellow human on Mars? Will the pause between transmission and receipt make conversation impractical?

2007-08-17 09:10:20 · 7 answers · asked by kiltie_nanaimo 2 in Astronomy & Space

The title should be self explanatory.

2007-08-17 09:05:34 · 5 answers · asked by Anonymous in Physics

Yellow lead oxide is always found in the ratio of lead to oxygen of 1000/77 Brown lead oxide is always found in the ratio of lead to oxygen of 1000/154 There is always twice as much oxygen in brown lead oxide as there is in yellow lead oxide. this is an example of wich law?

Law o definite Proportions

Law of multiple of Proportions

Law of conservstion of Matter

Law of conservation of Energy

2007-08-17 08:56:34 · 2 answers · asked by fuffy6yrfy d 1 in Chemistry

1. In the polynomial function f(x)=x^3-4x^2+6x-4,
2 is a zero of the function. Name another zero of the function.
2.What value of x would be a restriction in the rational equation: 4/2x-3=4/5
3. Simplify:2y^2-2/3y^2+3y/2y-2/6y+2
4.solve equation showing work, list any restrictions on x: x/x+1=1/3+2/x-2
5.solve, listing any restrictions on x: 2/a=4/a^2

2007-08-17 08:56:34 · 3 answers · asked by patrice cadet5 1 in Mathematics

i just dont have anyone to help me:(

2007-08-17 08:53:59 · 6 answers · asked by Anonymous in Mathematics

im hoping to study medicine at university, but im not sure exactly what type of doctor i want to be..not a surgeon, but i am interested in the brain... what sort of doctors are there that would be a possibililty for me? i am predicted mostly A's and A*'s for my gcses, so considering that, and the levels of study involved for the different branches of medicine, what would you suggest as a possible career choice??

2007-08-17 08:52:00 · 6 answers · asked by Anonymous in Medicine

URLs to reference:
http://www.nasa.gov/mission_pages/galex/20070815
http://www.galex.caltech.edu/MEDIA/2007-04

2007-08-17 08:48:19 · 4 answers · asked by James P 3 in Astronomy & Space

2007-08-17 08:46:39 · 8 answers · asked by Chelsea M 3 in Mathematics

2007-08-17 08:45:42 · 8 answers · asked by Don C 1 in Astronomy & Space

I don't understand where the middle number comes from, the number times x to the first power. It looks like you're doing addition when you factor the problem, but it seems like it should be only multiplication.

Example: 2x squared + 3x + 6 = 0. Where does that 3x come from or go to, because when you factor it out, you wind up with an answer like (x + something)(x + something)? The two x's times each other makes x squared. The middle number (3x in example)...?

Thanks for the help. I'm trying to learn this (again), but I'm stuck on understanding this point.

2007-08-17 08:42:59 · 7 answers · asked by Rella 6 in Mathematics

2007-08-17 08:41:52 · 6 answers · asked by Anonymous in Mathematics

The reason I'm asking is that my parents next door neighbours are burning it and it's giving off an awful smell, and quite dense smoke.
I'd be greatful for any help on this as we need to ask them to burn something else.

2007-08-17 08:31:42 · 1 answers · asked by Anonymous in Botany

2007-08-17 08:29:01 · 4 answers · asked by Vito Cucuzza 1 in Medicine

When the same two elements make up more than one compound the mass ratio of the elements in one compared to the other will always be small whole number This is a staement of wich law?

Law od Coservation of Matter

Law of conservation of energy

Law of Multiple Proportions

Law Definite Proportions

2007-08-17 08:25:02 · 1 answers · asked by fuffy6yrfy d 1 in Chemistry

What's the big deal?

2007-08-17 08:25:01 · 5 answers · asked by Anonymous in Physics

Im wondering about buprenorphine as an option to other opiates. considering obtaining drug in mexico. Need general info and types or mixes of drug. Also what are the procedures to get started. I live in Sierra Vista Az. Close to Mexico.

2007-08-17 08:24:19 · 1 answers · asked by michmelch 1 in Medicine

2007-08-17 08:23:12 · 15 answers · asked by solittletimetowaste 1 in Astronomy & Space

in mathematical terms?

2007-08-17 08:22:43 · 15 answers · asked by Anonymous in Mathematics

1. Given the polynomial P(x) = 2x3 - x2 - 13x – 6 and one of its factors: x + 2.

a. How many zeros will there be? How do you know that?

b. Find the remaining factors of the polynomial.

c. Please explain in words how you found the others

2. Analyze the roots of the polynomial P(x) = x4 + 3x3 - 5x2 + 2x – 4

a. Tell how many possible positive rational roots.

b. Tell how many possible negative rational roots.

c. Tell how many possible complex roots.

2007-08-17 08:21:31 · 3 answers · asked by patrice cadet5 1 in Mathematics