Science & Mathematics - 6 August 2007

How do I solve this problem?

x^2 + 2x - 16y^2 - 15 = 0

Thanks,

2007-08-06 15:08:28 · 2 answers · asked by thachick103 1 in Mathematics

equalling $30 dollars, and the desk clerk later realizes he should have only charged $25 total. He gave the bellman $5.00 to refund them, but the bellman cheated pocketing $3.00 and only gave them a refund of $1.00 each, keeping $2.00. So $10 less $1 equals $9. Three times $9 is $27. $27 plus the $2 the bellman stoled equals $29. WHAT HAPPENED TO THE OTHER DOLLAR?

2007-08-06 15:05:54 · 10 answers · asked by ABIGAIL 2 in Mathematics

How can you graph this?
y = [x]
(greatest integer function, do not connect the steps)
I really don't know how to graph this. Can you give me an example?
Thank you so much. I appreciated it.

2007-08-06 14:59:43 · 4 answers · asked by peopleme 1 in Mathematics

2) A long straight wire carries a current of 13.9 A. An electron travels at 24400 m/s parallel to the wire, 52.2 cm from the wire. The permeability of free space is 1.25664 x 10^-6 N/A2 and the charge on an electron is 1.6 x10^-19 C. What force does the magnetic field of the current exert on the moving electron? Answer in units of N...

2007-08-06 14:54:08 · 2 answers · asked by jay b 1 in Physics

IT´S BEEN 20 MIN AND IT STILL DOESN´T BOIL!!!!!!!!

2007-08-06 14:51:31 · 4 answers · asked by Pablo L 1 in Other - Science

2007-08-06 14:50:50 · 8 answers · asked by bahaiking 2 in Physics

is it possible there are no galaxies in our line of sight, anymore? That the accelerating expansion of the universe puts us in an empty space, with just our galaxy at "reach"...
better still, that we're on the verge of the "great rip"?......

2007-08-06 14:48:05 · 11 answers · asked by Anonymous in Astronomy & Space

Tell me now.

2007-08-06 14:41:09 · 12 answers · asked by Meow. 6 in Engineering

could u please tell me how to make a lewis structure for these following formula.please show me detail.SO[not zero]2 ,CoCl2, ClF3 ,XeO3 RnCl2 BeCl2

2007-08-06 14:38:48 · 4 answers · asked by TOny 1 in Chemistry

2007-08-06 14:37:20 · 9 answers · asked by kollett d 1 in Geography

veggies=no seeds, fruits=seeds

marijuana has seeds in it but its green?? im confused does it make it a vegetable?

2007-08-06 14:35:54 · 12 answers · asked by Anonymous in Botany

2007-08-06 14:35:14 · 9 answers · asked by Anonymous in Engineering

Is it adj over hyp?

What are the rest of the trig functions?

2007-08-06 14:34:50 · 2 answers · asked by Anonymous in Mathematics

I saw a movie called "what the bleep do we know??" which claims through quantum physics (I dont want to elaborate as i am afraid i make a mistake and make you miss the point of my question) you can, alter some events and do things like a telekinetik person would claim he could do, like moving objects without physical contact. Is this at least discussed on the scientific communitty or is it just plain old BS?

2007-08-06 14:34:18 · 3 answers · asked by Anonymous in Physics

2007-08-06 14:29:44 · 5 answers · asked by Anonymous in Astronomy & Space

please explain or give an example?

2007-08-06 14:25:30 · 9 answers · asked by sara.girl122 1 in Physics

each. give any approximate value to the nearest minute only. 3). sin 2 theta =sqrt 3/2 4). sin 2x -cos x =0 5). sin (2x - 10deg.)= 1/2 6). cos2x- sin^2 x/2 +3/4 =0 7). sin^2 theta = cos^2 theta + 1/2 8). cos4x = sin 2x.

2007-08-06 14:21:12 · 1 answers · asked by Anonymous in Mathematics

2007-08-06 14:12:37 · 12 answers · asked by Jen2U 3 in Other - Science

i do believe that we are not alone in the universe. do u? any1 on here ever seen a ufo?

2007-08-06 14:12:33 · 6 answers · asked by Anonymous in Astronomy & Space

If f (x) = x - 1, g(x) = x + 1, and N = {1, 2, 3, 4,. . .} is the domain of each function, find the simplest possible expression for the following.

(a) f (g(x))

(b) g(f(x))

2007-08-06 14:12:30 · 5 answers · asked by Anonymous in Mathematics

Given the function rules and domains, find the associated ranges.

(a) f (x) = 2x + 3, domain = {0, 1, 2}

(b) f (x) = 0, domain = {0, 1, 2}

2007-08-06 14:10:15 · 3 answers · asked by Chris 1 in Mathematics

2007-08-06 14:10:06 · 5 answers · asked by Jen2U 3 in Earth Sciences & Geology

Use the binomial theorem to prove:
http://img172.imageshack.us/img172/7686/ilc89pr2.jpg

Prove: http://img505.imageshack.us/img505/8370/ilc90blk3.jpg, 0 ≤ j ≤ n

2007-08-06 14:08:22 · 1 answers · asked by Tina 2 in Mathematics

I've tried over and over but I just can't get it.
The first one is x^2+3x+1.
The second one is x^6-2x^5+7x^4.

2007-08-06 14:02:03 · 2 answers · asked by MandalorianSquid 2 in Mathematics

A. d= vt, solve for v B. H= bC^2RT, solve for R C. S= squareroot 32(d+kh) solve for h

2007-08-06 13:58:24 · 1 answers · asked by Anonymous in Mathematics

A survey was made of 200 students to study their use of the public library system. The findings were as follows:

60 used the Reader’s Guide.
28 used both the card catalog and the information booth.
68 used the information booth.
83 did not use the library.
43 used only the card catalog.

Explain how the above information can be used to conclude that some students must use both the information booth and the Reader’s Guide.

2007-08-06 13:56:50 · 2 answers · asked by Chase L 1 in Mathematics

2007-08-06 13:53:08 · 3 answers · asked by Anonymous in Mathematics

2007-08-06 13:50:44 · 6 answers · asked by Ash 1 in Mathematics

Here's the question. I'm having trouble with it.
Divide.
2x^2y-6xy^2+12xy / 2xy

Can you help me? Thanks, if you can.
:-D

2007-08-06 13:48:21 · 7 answers · asked by Nerds Rule! 6 in Mathematics

in kelvins and in degrees Fahrenheit?

2.The temperature in deep space is thought to be around 3k.
what is 3k in degrees celsius? in degrees Fahrenheit?

3.In an alcohol thermometer, the height of a constant amount of liquid alcohol in a thin glass tube increases or decreases as temperature changes. Explain the behavior of the alcohol using the folowing terms: lose energy, gain energy, volume(or space), movement, molecules(or particles).

2007-08-06 13:42:41 · 7 answers · asked by Anonymous in Chemistry