Science & Mathematics - 26 September 2007

2007-09-26 23:56:43 · 12 answers · asked by Anonymous in Weather

anybody knows about this

2007-09-26 23:51:18 · 2 answers · asked by Thamarai 1 in Astronomy & Space

2007-09-26 23:39:11 · 20 answers · asked by Anonymous in Geography

2007-09-26 23:37:44 · 8 answers · asked by small 7 in Mathematics

Could anyone do this for me, and show me the steps, please?

4x-3=7x+8


3(x-5)=x(4+3)

2007-09-26 23:24:52 · 9 answers · asked by Anonymous in Mathematics

2007-09-26 23:22:00 · 5 answers · asked by Becky 1 in Mathematics

I have three evidences: B1, B2, B3 (this means they are already known)
And I want to predict A given these evidences, so according to the bayes theorem, it should be:

P(A|B) = P(B1 | A) * P(B2 | A) * P(B3 | A) * P(A) / P(B)

Is this correct?

If yes, my question is that is the denominator P(B) in this formula equal to P(B1) * P(B2) * P(B3)? My teacher already told me this is wrong, but I just don't understand why.

Could experts please explain why as simple as possible because I am very new to probability and statistics.

Thank you very much for your help.

2007-09-26 23:17:25 · 1 answers · asked by I need answers 1 in Mathematics

2007-09-26 23:16:43 · 5 answers · asked by Vaibhav Khurana 1 in Physics

Find the smallest integer value of n for which 120n is a perfect square.

My answer is n = 7.5

Is it correct?

If not, could you please show me your workings? I want to learn, thanks.

2007-09-26 23:13:49 · 3 answers · asked by Anonymous in Mathematics

like a car driving on the outside of a wheel, or does the object retain orientation and needs to be spun (like the moon)

2007-09-26 22:51:35 · 5 answers · asked by Matthew P 4 in Astronomy & Space

I was researching genetics and read that if both parents have blue eyes, they can not have blue eyed children. This is true in my case because both of my parents have (and had) blue eyes and my eyes are green. Now, my husband has brown eyes and our daughter has the most gorgeous blue eyes I have ever seen.

2007-09-26 22:48:47 · 9 answers · asked by jossa 3 in Biology

The Great Singapore Sale 40% off, save $32!

Using the above information, find the sale price of the jacket.

2007-09-26 22:44:15 · 6 answers · asked by Anonymous in Mathematics

Show me your workings..Thanks.

2007-09-26 22:38:11 · 10 answers · asked by Anonymous in Mathematics

2007-09-26 22:34:57 · 10 answers · asked by Anonymous in Paranormal Phenomena

It cant be the same system as airplanes use because there is no oxygen in space or is it the same?

2007-09-26 22:33:00 · 5 answers · asked by kris 2 in Astronomy & Space

2007-09-26 22:28:36 · 17 answers · asked by Anonymous in Paranormal Phenomena

If they are not, then when did they start and stop using them?

2007-09-26 22:26:28 · 9 answers · asked by Shamillionaire 2 in Geography

A ten volume set of books stands on the shelf. The first five books (1-5) are each 7.4com thick. The last five books (6-10) are each 9.6 com thick. A bookworm starts at the front cover of volume one and eats his way in a straight horizontal line through to the back cover of volume ten. How far does the worm travel

2007-09-26 22:19:09 · 5 answers · asked by Anonymous in Mathematics

2007-09-26 22:03:05 · 4 answers · asked by someone 1 in Engineering

after watching sunshine, the concept of moving close to the sun seems easy, so long as you can get a perfect enough mirror to reflect 100% of the light. would it take more than a perfect mirror, and if not, how could such a reflective object be made?

2007-09-26 21:59:16 · 3 answers · asked by Anonymous in Physics

2007-09-26 21:58:52 · 4 answers · asked by ultramyk 3 in Zoology

I know ginko helps the blood flow to the brain, which helps me study, but I am wondering what will happen if I hang upside down before a test or before I study.

2007-09-26 21:27:03 · 6 answers · asked by kinkb04 1 in Medicine

longest river in which continent?

2007-09-26 21:15:25 · 15 answers · asked by asha n 1 in Geography

A row of 10 shops is to be painted in 3 colours. 2 shops are to be yellow, 3 to be red and 5 to be blue.

Find the number of ways in which the row of shops can be painted given that the first and the last shops in the same row are of the same colour.

Please help. Thanks!!

2007-09-26 20:52:11 · 3 answers · asked by silent 1 in Mathematics

2007-09-26 20:24:24 · 9 answers · asked by Anonymous in Geography

(for the viewing area), how wide and how high is the viewing area of this television?
I'm stuck on this problem.

2007-09-26 20:16:54 · 2 answers · asked by glamour girl 1 in Mathematics

A m = 1.9 kg wood box slides down a vertical wood wall while you push on it at a = 48° angle. What magnitude of force should you apply to cause the box to slide down at a constant speed?
N

2007-09-26 20:14:49 · 1 answers · asked by Jim E 1 in Physics

how many people think the moon landing was a hoax

2007-09-26 20:14:15 · 23 answers · asked by hsdofs 1 in Astronomy & Space

How far is it from one corner of the field to opposite corner? I know I have to use the quadratic formula, but How? Please help!

2007-09-26 20:12:32 · 3 answers · asked by glamour girl 1 in Mathematics

2007-09-26 20:05:00 · 21 answers · asked by Anonymous in Other - Science