Science & Mathematics - 21 January 2007

Which do you like better playing in the white snow or surrfing git up in the sand?

2007-01-21 13:04:56 · 10 answers · asked by Anonymous in Weather

i need this formula for what i am working on

2007-01-21 13:04:36 · 2 answers · asked by macgyver 1 in Engineering

I have contridicting informaiton that to truly mark a product up you divide rather than add...i.e to mark up 100.00 you simply multiply .10. Or do you divide using .90?

2007-01-21 13:03:25 · 2 answers · asked by redbull07 2 in Chemistry

a. in the plankton
b. on rocks
c. as parasites
d. as endophytes
e. on the water surface

2007-01-21 13:02:56 · 1 answers · asked by Anonymous in Biology

I know this had to do with inertia, but I need to explain what this is demonstrating and can't figure out how to word it.

2007-01-21 13:02:44 · 5 answers · asked by wencar29 1 in Physics

a question from mt hw:

"the two-mile long linear accelerator at Stanford U in CA "appears" to be less than a meter long to the electrons that travel it. Explain."

could someone help me please?
thank u!

2007-01-21 13:02:12 · 2 answers · asked by Anonymous in Physics

P.S dont give webs and please good answers

2007-01-21 13:01:57 · 4 answers · asked by Anonymous in Astronomy & Space

2007-01-21 13:00:50 · 5 answers · asked by fredgg78 1 in Mathematics

Find the decimal equivalent of the mixed number. 2 2/5 one more question.
Find the decimal equivalent of the mixed number. 5 3/16

2007-01-21 13:00:18 · 4 answers · asked by Anonymous in Mathematics

Tickets for a play at the community theater cost $12 for an adult and $8 for a child. If 150 tickets were sold and the total receipts were $1640, how many of each type of ticket were sold?

2007-01-21 12:58:46 · 7 answers · asked by Anonymous in Mathematics

2007-01-21 12:58:13 · 4 answers · asked by fredgg78 1 in Mathematics

2007-01-21 12:57:04 · 4 answers · asked by fredgg78 1 in Mathematics

OK i read some stuff on the internet but cant remember what they are

2007-01-21 12:56:39 · 2 answers · asked by TOMMY 1 in Astronomy & Space

2007-01-21 12:54:30 · 4 answers · asked by Anonymous in Chemistry

what would be the capacity (in milliliters) of a fish tank that is 40 cm long, 20 cm wide, and 30 cm high?
Remember: 1 cm3 = 1mL

2007-01-21 12:54:26 · 3 answers · asked by Anonymous in Mathematics

3xy^2 - 5yz= 4x

2007-01-21 12:54:09 · 8 answers · asked by Phillip V 1 in Mathematics

2007-01-21 12:53:10 · 16 answers · asked by AdRiAnAlUv 1 in Mathematics

1. y= 6 - x
y= -4x + 3

2. y= 5 - 3x
3x - 2y =8

3. y=5x
x+3y = -32

4. -2x + y = 8
x=3y

2007-01-21 12:52:56 · 3 answers · asked by User84 4 in Mathematics

2007-01-21 12:52:41 · 10 answers · asked by Shuntel S 1 in Geography

2007-01-21 12:50:56 · 3 answers · asked by Raposo D 1 in Physics

I have tried after school study programs, tutors...nothing helps..Is there any easy way to help him learn this stuff, I am of no use because I don't understand it myself...And he has to pass it, to graduate High School...

2007-01-21 12:49:56 · 4 answers · asked by Mommy Dearest 5 in Mathematics

In a class of 38 students,32 are wearing jeans,21 are wearing t-shirts, 15 are wearing both. How many are wearing jeans and something else?(had to switch them not enough space in question) .:the answer in book says 17 students but how did you get it?:.

2007-01-21 12:49:34 · 2 answers · asked by lyzze 1 in Mathematics

in area to that of the triangle has a width of 3 inches. The perimeter of the rectangle, expressed in inches, is?

11
22
18
24
28

2. What is the area in the above triangle in inches?

2007-01-21 12:49:07 · 7 answers · asked by shariff B 1 in Mathematics

i cant find the antiderivative of ln(x). I understand that the derivative of ln(x) is 1/x, but does anyone know what the antiderivative is?

2007-01-21 12:48:37 · 4 answers · asked by sirioshyguy 1 in Mathematics

In a simple graph, G=(V, E), for each pair of distinct vertices u,v, edge(u,v) appears with probability 1/2. A triangle is a cycle of length three. X is a random variable denoting the number of triangles in a random graph G. Given the expected value of X,
E(X) = (n choose 3)*(1/8)
for n = # of nodes, and variance,
Var(X) = (n choose 3) * (n +5) / 64
give an upper bound using Chernoff bounds on the probability that X exceeds its expected value by 10%. Give general expression in terms of n. (Keep in mind that X is the sum of DEPENDENT random variables, as each triangle's probability of being present is affect by those around it. i.e. if triangle (u, v, w) is present, triangle (u, v, x) has a high probability of also being present as one of its edges is already known to exist. If this assumption is wrong, please explain why.)

2007-01-21 12:48:05 · 1 answers · asked by Anonymous in Mathematics

2007-01-21 12:47:57 · 15 answers · asked by AdRiAnAlUv 1 in Mathematics

1 Have you noticed water collecting on the outside of a glass containing an ice-cold drink? Where did this water come from and why did it collect on the glass?
2 A glass of water is placed next to a puddle that contains the same amount of water. Explain why water in the glass evaporates more slowly than the water in the puddle?
3 Use the kinetic theory to explain why a gas completely fills its containor while a liqued or solid may not

2007-01-21 12:47:17 · 4 answers · asked by yakmicjan 3 in Physics

1. One Chemical property of matter is:
a) boiling point; b) texture; c) reactivity; d) density
2. A line spectrum is produced when an electron moves from one energy level:
a) To a higher engery level; b) to a lower energy level; c) into the nucleus; d) into another position in the same sublevel
3. In a molecule of fluorine, the two shared electrons give each fluorine atom _________ electron(s) in the outer energy level.
a) 1; b) 2; c) 8; d) 32
4. When potassium reacts with water, one product formed is:
a) hydrogen gas; b) oxygen gas; c) potassium oxide; d) salt

Thank you for whoever helps.

2007-01-21 12:47:14 · 3 answers · asked by Allahu_Akbar 3 in Chemistry

2007-01-21 12:47:13 · 6 answers · asked by freecharlie8 1 in Other - Science

I'm stumped. This is probably a really simple problem but I'm drawing a blank:

x^2 - 5x - 14

I can only get as far as (x -_ ) (x +_ ). I really have no idea what goes in the blank spaces. I'm not even 100% sure I have the - and + symbols in the right order.

Thanks in advance.

2007-01-21 12:46:26 · 2 answers · asked by Anonymous in Mathematics