Science & Mathematics - 31 January 2007

Imagine the earth is a huge sphere with a belt around it. A new belt is made 20 ft longer than the original. Imagine they are concentric circles (having the same center). How far away are these two belts from each other??

2007-01-31 08:37:47 · 3 answers · asked by Anonymous in Mathematics

2007-01-31 08:36:35 · 6 answers · asked by Anonymous in Mathematics

As in elephant the animal with 8 legs i fink

2007-01-31 08:35:45 · 8 answers · asked by Phoebe B 1 in Zoology

please help!

2007-01-31 08:33:28 · 2 answers · asked by Judy 5 in Botany

Have 52 variables. nCx=270725 pls break down into poss. combos& prove. Ex. if 4 out of 52 variables are equivalent, how many times will the same var.'s happen 4 x in a row? answer is 52x3x2x1/4! or 52x3x2x1/4x3x2x1, or 13. BUT how is calculation figured when the 1ST instance can be any 1 var., & 1 of the following 3 must be equiv.(if only 3 var.'s remain), etc.? Pls prove the following:
given x=52, a=1st var, b=2nd var, c=3rd var...therefore, xabc/4!=13, where a,b,&c are certain values not equiv. to x or a or b or c...so when x=a(3x) or b=c(3x) or x=b(3x) or x=c(3x), for ex., how does one solve that?
At any rate, pls prove so that all solutions and show work(to the extent possible on yahoo! text fields), so that, when added together, equal 270,725, that will help me out immensely. TY in advance!

2007-01-31 08:33:18 · 1 answers · asked by Anonymous in Mathematics

1)2x-8

A) eight less than twice a number
B)twice a number less than eight
C)Eight less than a number squared
D)A nuber squared less than wight

2) Which represnts all the values for 'a' that makes the following true?
a + 8 > 4 w/ a line under >

A) a < -4 w/ a line under <
B) a > -4 w/ a line under >
C) a < -12 w/ a line under <
D) a > -12 w/ a line under >

THanks

2007-01-31 08:32:06 · 1 answers · asked by Anonymous in Mathematics

My fiance is saying that I will never actually become a marine biologist and he thinks that I should stop my schooling for it because it's "irrational", even though it has been my lifelong dream. I'm not sure what I should do.. just drop out of school, or keep following my dream..

2007-01-31 08:30:57 · 6 answers · asked by industrialbug 2 in Biology

2007-01-31 08:30:54 · 6 answers · asked by Anonymous in Astronomy & Space

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2007-01-31 08:30:32 · 6 answers · asked by Anonymous in Chemistry

How much in percentages does each of the 7 continents make up of the earth??

2007-01-31 08:29:56 · 1 answers · asked by madison b 1 in Earth Sciences & Geology

Can it actually be calculated when a gas giant planet or star could burst into a sun?

2007-01-31 08:29:41 · 3 answers · asked by b g 1 in Astronomy & Space

Also they seem to have the same answers, even down to the same page layout. Are they the same company?

2007-01-31 08:28:39 · 17 answers · asked by footynutguy 4 in Other - Science

would your seatbelt be safe and comfortable in real life? reflect on the importance of seatbelts??

i have this question in my Pisics class??
what do you think??

2007-01-31 08:27:29 · 14 answers · asked by Anonymous in Physics

2007-01-31 08:26:54 · 13 answers · asked by Anonymous in Weather

yes i do

2007-01-31 08:26:47 · 2 answers · asked by wether kid 1 in Weather

2007-01-31 08:25:56 · 2 answers · asked by Mets 1 in Biology

10 less than 7 times the sum of the second and fourth. What were here four integers?

(Please show your work.)

2007-01-31 08:20:34 · 6 answers · asked by Chelsey 5 in Mathematics

2007-01-31 08:20:08 · 7 answers · asked by Anonymous in Medicine

2007-01-31 08:18:23 · 7 answers · asked by Me<3JB 2 in Biology

2007-01-31 08:17:51 · 3 answers · asked by jules9332 1 in Mathematics

What do these three elements have in common.... properties ct....

2007-01-31 08:17:04 · 1 answers · asked by Anonymous in Chemistry

After reading the secret life of plants, I believe it is true. but it was written in the 60s or 70s and I want to know if there is modern information about talking, feeling plants.

2007-01-31 08:16:37 · 23 answers · asked by Janice F 1 in Botany

2007-01-31 08:16:33 · 5 answers · asked by Anonymous in Weather

2007-01-31 08:16:25 · 3 answers · asked by Me<3JB 2 in Biology

The integral is from 0 to pi/2, and the problem is:

[sin(2x)] / [a+sin²(x)] dx

The problem also says:
Recall that sin(2x) = sin(x)cos(x), but I thought it would equal 2sin(x)cos(x)?

I have no idea how to begin this problem. Once I get that figured out, the rest should fall into place.

Thanks!

2007-01-31 08:16:04 · 4 answers · asked by Anonymous in Mathematics

2007-01-31 08:15:47 · 8 answers · asked by Anonymous in Physics

2007-01-31 08:15:28 · 4 answers · asked by mac man 1 in Medicine

I have these two little magnets that are really cool. You squeeze them and they spin in the air. My question now is that I'm wondering if there is some way to improve or increase a magnet's magnetic force or pull. It would really help me if there were. Does anyone know if you can improve a magnet's pull?

2007-01-31 08:14:44 · 9 answers · asked by Anonymous in Other - Alternative

I feel flourecent light are responsible for may medical problems including ADD, ADHD, and Eplilepsy. I feel even non epileptics get auras or partial siezures form these light bulbs. I though we should ban the flourecent light while now I am hearing they want ban incadecent. This is ridiculous. How do you feel about this ban or efforst to use more flourecent lights. These lights flicker at a very high speed which you do not see but your brain does and I feel this is what is causing so many people to have problems. I think kids will do better in school if the incedecnt light bulb is used.

2007-01-31 08:13:37 · 6 answers · asked by curthauer 2 in Physics

Makes more sense to me, what do you-all think?

2007-01-31 08:13:17 · 6 answers · asked by Anonymous in Other - Science