Science & Mathematics - 25 November 2007

2007-11-25 21:25:57 · 8 answers · asked by Anonymous in Astronomy & Space

Can somebody please give me an extremely simple explanation to how I can solve the 3X3X3 rubick's cube? (I'm not that good at maths). Thank you :)

2007-11-25 21:21:49 · 9 answers · asked by Anonymous in Mathematics

is there body appearances that could lead to conclusion that there might be possibilities of complexion of pregnancy or delivery? thank u so much for your answer or any idea

2007-11-25 21:19:08 · 1 answers · asked by Anonymous in Medicine

If a+b+c=180 (degrees)
Prove that
sin^3 a+sin^3 b+ sin^3 c=3cos(a/2)cos(b/2)cos(c/2)+ cos(3a/2)cos(3b/2)cos(3c/2)

Please show me each step of your working.

Thank you very much in advance.

P.S.this is a really brain-storming problem ;-)

2007-11-25 21:17:54 · 4 answers · asked by Anonymous in Mathematics

2007-11-25 21:05:34 · 18 answers · asked by Goldfish" 1 in Astronomy & Space

it is associated w/ neutralization for bacterial infection (serology)

2007-11-25 20:58:50 · 2 answers · asked by curious_me 1 in Medicine

associated w/ neutralization for bacterial infection (serology)

2007-11-25 20:52:15 · 1 answers · asked by curious_me 1 in Medicine

neutralization for bacterial infection (serology)

2007-11-25 20:49:19 · 2 answers · asked by curious_me 1 in Medicine

IS IT POSSIBLE TO HAVE AN ELEVATOR THAT CAN REACH FROM A GROUND BASED ELEVATOR TO OUTER SPACE ? DO YOU THINK IT WILL BE A REALITY ONE DAY?

http://www.cnn.com/2006/TECH/space/09/18/space.elevator/index.html

2007-11-25 20:47:54 · 8 answers · asked by SPACEGUY 7 in Astronomy & Space

2007-11-25 20:33:40 · 1 answers · asked by Anonymous in Astronomy & Space

ABCD is a trapezoid where AB and CD are the legs while AD is the longest base and BC is the shortest base. XY is parallel to AD, BX = 1/4AB, BC=10 and AD=20. Find XY.





Pls. answer it i need it now pls. show your solution pls. pls. i'm begging you pls. pls. pls. pls. i'm so very begging you pls.

2007-11-25 20:26:58 · 3 answers · asked by Anonymous in Mathematics

A sample of cobalt-60 has an activity of 24 Bq. The back ground count is 6 Bq.
The half life of cobalt-60 is 5 years. How long will it take for the sample to reach a safe level of activity?

2007-11-25 20:26:25 · 3 answers · asked by Anonymous in Chemistry

1) 175% of what number is 21?

2) 28 is 87 1/2% of what number?

3) What is 26% of 81?

4) 37% of 55?

5) Find the Percent of increase: original price $4..New price $4.50?

6) Find the Percent of Decrease: Temp at noon 24F..Temp now 8F?

7) Find the percent of decrease: Original price $27..New $18?

2007-11-25 20:12:18 · 7 answers · asked by tommygurl48670 2 in Mathematics

We have built our kids a sandpit and need to know how much sand to put in it.asically I have forgotten how to work out the volume of a shape. The sandpit dimentions are:
2.3m long x 2.3 m wide x .3 metres deep.
Can you refresshmy brain on this so simple maths problems.
Thanks

2007-11-25 20:09:56 · 9 answers · asked by Anonymous in Mathematics

I need help! How do I multpily this...

√3 x √5

or simplify this by factoring?!

√x^7

2007-11-25 20:09:16 · 5 answers · asked by Babygurl91 1 in Mathematics

lol, just a thought

2007-11-25 20:05:51 · 5 answers · asked by Meh 2 in Medicine

A 11.0 g bullet is fired horizontally into a 103 g wooden block that is initially at rest on a frictionless horizontal surface and connected to a spring having spring constant 147 N/m. The bullet becomes embedded in the block. If the bullet-block system compresses the spring by a maximum of 84.0 cm, what was the speed of the bullet at impact with the block?
m/s

2007-11-25 20:04:45 · 3 answers · asked by AmandaLiu 1 in Physics

How do I use a radical notation to rewrite this expression?

49 1/2

2007-11-25 20:02:32 · 3 answers · asked by Babygurl91 1 in Mathematics

2007-11-25 20:02:26 · 2 answers · asked by Mercury 2010 7 in Astronomy & Space

E = mc^2 seems to have to do with time dilation for a mass traveling at the speed of light. Does the square for the speed of light apply when traveling at the speed of light in space?

2007-11-25 19:58:00 · 6 answers · asked by Dan 3 in Physics

Are there any possibilities that thousands of years from now, human may leave the earth and thrive in "another earth", a place better than earth, for any good reasons.

2007-11-25 19:52:38 · 22 answers · asked by Boknoy 3 in Astronomy & Space

ABCD is a trapezoid where AB and CD are the legs while AD is the longest base and BC is the shortest base. XY is parallel to AD, BX = 1/4AB. Find XY.





Pls. answer it i need it now pls. show your solution pls. pls. i'm begging you pls. pls. pls. pls. i'm so very begging you pls.

2007-11-25 19:49:28 · 2 answers · asked by Anonymous in Mathematics

2007-11-25 19:48:42 · 3 answers · asked by Anonymous in Mathematics

2007-11-25 19:48:34 · 0 answers · asked by Anonymous in Earth Sciences & Geology

distances from a mid-ocean ridge?

Explain your thinking.

2007-11-25 19:46:43 · 2 answers · asked by dandelion 1 in Earth Sciences & Geology

Please show working out. I've been trying to do this for so long but just can't seem to get it. I know the answer is x=4 by just looking at the question.

Thanks

2007-11-25 19:40:57 · 5 answers · asked by Anonymous in Mathematics

I graded my students' listening test, but all the scores are too close to each other. How do I spread them out proportionally to accurately reflect the difference between the better and worse students? Please give me the math I need to use. Thank you.

2007-11-25 19:36:16 · 3 answers · asked by GenshiYagyu 2 in Mathematics

Not me! I was just curious because one of my husbands friends has married his first cousin (which isn't uncommon in Egypt) and they plan to have children. I was explaining to him that their kids will have alot of recessive genes and could have alot of complications. I would love an experts answer on this about how the genetics work.
Thanks

2007-11-25 19:36:01 · 6 answers · asked by Anonymous in Medicine

theta is between 0 and 180 degrees

2007-11-25 19:29:57 · 5 answers · asked by nat king 1 in Mathematics

2007-11-25 19:28:20 · 4 answers · asked by Gideon 1 in Chemistry