Science & Mathematics - 7 October 2007

Perform the following addition for base 12 (show the process- The answer should be in BASE 12 form - NO decimal):

..AB198
+99A51

2007-10-07 03:34:57 · 3 answers · asked by Jenny 1 in Mathematics

this is very tricky,,
don't just say 10,,
think!
~_^

2007-10-07 03:33:47 · 11 answers · asked by gunkedar 2 in Mathematics

We've never seen them splashing in the lake water but they use the birdbath all the time. The lake water is a public water supply and is very clean.

2007-10-07 03:33:05 · 7 answers · asked by Steve O 1 in Zoology

OABC is a field. A is 88 metres due North of O. B is 146 metres from O on a bearing of 040degrees. C is equidistant from A and from B. The bearing of C from O is 098degrees.
Please help me find the measures of OC ad OB.

Note. by my calculations I found the following:
AB= 96.8m using the cosine law for given two sides and an included angle.
But i could find OC and BC.

2007-10-07 03:22:20 · 2 answers · asked by yenyen 2 in Mathematics

2007-10-07 03:18:43 · 5 answers · asked by Anonymous in Astronomy & Space

The number of atoms in a mole is x. How many atoms are contained in
Q1) 4 moles of carbon atoms;
Q2) 8g of oxygen?

2007-10-07 03:12:37 · 2 answers · asked by axb 1 in Chemistry

2007-10-07 03:03:21 · 2 answers · asked by Anonymous in Chemistry

2007-10-07 02:59:15 · 3 answers · asked by starkey 1 in Physics

A digital sum of a number is found by adding all of the digits of a number, then adding all the digits of that number, and so on, until you are left with a one-digit number.

For example, the digital sum of the number 729 would be found like this: 7+2+ 9 = 18, and then 1+ 8 = 9.

What is the digital sum of the number that can be found by the following formula?

(9[62773] + 2)[83721]

PS - The numbers in brackets are smaller and higher up on the math problem.

2007-10-07 02:52:32 · 6 answers · asked by Anonymous in Mathematics

2007-10-07 02:50:27 · 11 answers · asked by Anonymous in Mathematics

Leprosy

2007-10-07 02:44:40 · 16 answers · asked by elfie cayabyab 1 in Biology

I am currently in a relationship with a man who I truely believe in my heart is the one I am to marry. But there are several other men who are trying to get my attention. The man that I am currently with is a bit aloof and it be days between since any contact. My question is...will my current beau indeed be the one I marry, will we have children and how soon..or should I just let him go...any insight would be helpful. PS let me know if additional details are needed.
Thanks,

2007-10-07 02:44:14 · 6 answers · asked by Anonymous in Parapsychology

well i doesnt understand wad is standard form ..how it works can give example and show me~

2007-10-07 02:41:57 · 3 answers · asked by Ruojie 2 in Mathematics

Many Researches conclude saying moon to be an artificial setup by some ALIEN life for some un known reason...

Whats your opinion

GOOGLE "Aliens on moon" for more details...

2007-10-07 02:28:40 · 12 answers · asked by Gauri & Ram 1 in Astronomy & Space

2007-10-07 02:24:55 · 5 answers · asked by Badal P 1 in Mathematics

Calculate the concentraiton HPO4^2- ions.

2007-10-07 02:23:09 · 1 answers · asked by Physicskid 1 in Chemistry

2007-10-07 02:23:07 · 5 answers · asked by Anonymous in Mathematics

∫x²sinx dx

Please do it step by step with details

2007-10-07 02:20:38 · 2 answers · asked by Anonymous in Mathematics

2007-10-07 02:19:50 · 3 answers · asked by atesyrup 1 in Botany

2007-10-07 02:17:05 · 9 answers · asked by Autumn 2 in Astronomy & Space

2007-10-07 02:16:15 · 1 answers · asked by Anonymous in Mathematics

I mean like we are getting transplant with human made organs - is there something similar with blood?

2007-10-07 02:01:43 · 6 answers · asked by Anonymous in Medicine

1) 6x + 2y = -2
4x + y = 1

2) 3x + 2y = 6
x + 2y = -6

3) 5x - 4y = 9
x - 2y = -3

4) x + 3y = 5
4x + 5y = 13

5) x + 3y = 8
2x - y = 9

2007-10-07 01:55:33 · 4 answers · asked by princess 1 in Mathematics

How do bacteria create resistance to antibiotics and other chemicals? What happens really inside of them that makes them resistant?

Thanks a million!

2007-10-07 01:44:28 · 3 answers · asked by Crazyfred02 1 in Medicine

I have very severe adult ADD. I have been on and off medication all my life for it.

Like ritilin, adderal, etc....

But I hate the way it makes me feel.

But sometimes when I really need someting to help me focus, I find that coffee helps a little - and gives a similar effect.

Why?

2007-10-07 01:34:11 · 1 answers · asked by oneakmusic 2 in Medicine

also use the answer to the above to show that f(x) >= 2 for all x

2007-10-07 01:31:09 · 1 answers · asked by Ronny A 1 in Mathematics

2007-10-07 01:27:26 · 4 answers · asked by kenny 1 in Chemistry

2007-10-07 01:24:53 · 1 answers · asked by rhea fe s 1 in Biology

If we undergo a reaction that can produce oxygen, and we collect the oxygen in a gas jar. How do we know if we have collected a full gas jar of oxygen? I don't know/

As pure oxygen must be got, we could not use a syringe.

If the gas is chlorine, we can put a pH paper near the open of the gas jar until the pH paper turns red and then white. But how about oxygen?

2007-10-07 01:22:13 · 2 answers · asked by Anonymous in Chemistry

What is the theory behind the development of different races? Was the "first human" dark-skinned or light-skinned?

What is the genetic background of the shift of characteristics?

(Just cold, scientific answers please: I am not asking a religious question although I respect that people have religious views and their right to hold them: please assume I already know these theories)

2007-10-07 01:21:03 · 6 answers · asked by ewanspewan 4 in Biology