Science & Mathematics - 2 September 2007

2007-09-02 08:38:33 · 13 answers · asked by G.xi 1 in Astronomy & Space

Show that a group of order 12 has an element of order 3. Determine the order of 11 in the group U 237...

2007-09-02 08:36:39 · 3 answers · asked by TIME=TIEMPO 1 in Mathematics

I understand why we would find oil in the icy places north and south because of the ice age theories and Earth rotation stuff, but why is it found so deep underground and so deep under the sea. AND, why is there so much of it found in huge pockets?
AND, just for fun...how many gallons of crude oil could you get out of a T. Rex, say?
There must have been a very HUGE amount of old dinosaurs for us to have the billions and billions of gallons of oil we have found and that we probably will find.
And what about coal? I've always heard that anything that can burn was once alive.
Help me out here. And don't call me stupid. Just curious and lazy.

2007-09-02 08:36:07 · 4 answers · asked by Michael P 2 in Earth Sciences & Geology

simplify using only positive exponents. do not rationalize the denominator.

1. square root (4x-16) / fourth root {(x-4)^3}

2. [ (1 / x^-2) + (4 / x^-1 y^-1) + (1 / y^-2) ]^(-1/2)



sorry if its confusing (specially the second one...) let me know if you want clarification on any part of it!! thanks for the help!!!


please show steps...i think i have the right answer for 2, but im not sure... i got 1/x + 4/sqrtxy + 1/y

2007-09-02 08:35:22 · 3 answers · asked by Anonymous in Mathematics

Okay so the problem is y=the square root of x+17

x cannot equal -17.

So do I use brackets or parenthesis. Thank you to everyone who answered my first question, but I don't understand how you would know that -17 IS included or IS NOT included.

2007-09-02 08:34:55 · 3 answers · asked by Anonymous in Mathematics

g(x)=1/x^2, g(x)-g(3)/x-3, "x is not equal to 3"
Please list steps.

2007-09-02 08:33:05 · 1 answers · asked by Sam Dali 2 in Mathematics

I have a triangle. One angle is 88 degrees 40 minutes. The second angle is 37 degrees 52 minutes. Find the 3rd angle. I know the answer for this problem, however, I do not know how to solve it can anyone help me!!! The answer is 53 degrees 28 minutes.

2007-09-02 08:32:13 · 2 answers · asked by viri4 1 in Mathematics

I have been on it for about 2 months now, it works pretty well, but sometimes I still want to get high, and will take a few more milligrams of Sub. to get a buzz. Does anyone else do this, I thought suboxone was supposed to supress cravings!

2007-09-02 08:30:54 · 2 answers · asked by Oregon2Texas 2 in Medicine

Since last year when my partners Nan died I've always told him that she visits him. I said it because I really feels that she does. Last week he said to me."If she visits me then why don't I feel her?" I told him it was because she did not want to upset him. The other night he was walking up the stairs and he smelt her smell. I told him that she was telling him she was there. I'm practising to find my spirit guide how did I do this withou them?

2007-09-02 08:29:13 · 10 answers · asked by sam 2 in Paranormal Phenomena

2007-09-02 08:29:12 · 1 answers · asked by rootbeerfloat735 2 in Zoology

2007-09-02 08:27:31 · 6 answers · asked by abraymond5 1 in Mathematics

a, 3 inches
b, 4.5 inches
c, 5 inches
d, 5.5 inches

2007-09-02 08:25:46 · 3 answers · asked by blair g 1 in Mathematics

I take ginko biloba on a regular basis (and fish oil during periods when I don't have fish). Is it ok to go out and drink every once in a while? I mean, if ginko increases blood circulation to the brain, would this get me drunk faster or cause more alcohol to go to the brain???
Let me know!

2007-09-02 08:20:34 · 1 answers · asked by Daw 1 in Medicine

1)You invested $7000 in two accounts paying 6% and 8% annual interest, respectively. If the total interest earned for the year was $520, how much was invested at each rate?

2) Thing did not go quite as planned. You invested $8000, part of it in stock that paid 12% annual interest. However, the rest of the money suffered a 5% loss. If the total annual income from both investment was $620, how much was invested at each rate?

Please help? How do I solve?

2007-09-02 08:18:20 · 6 answers · asked by alchem 1 in Mathematics

Hi, i don't understand how to solve this quadratic function: y=-3x^2. I can't seem to know how to find the axis of symmetry, vertex, and how to plot it. I Know how to solve questions like this y-5=-(x+2)^2. But I don't know how to solve that basic function. Help me asap please. Thanks in advance.

2007-09-02 08:17:09 · 2 answers · asked by Here for You 2 in Mathematics

I need help:

given the vectors v= -2i+5j and w=3i+4j determine:

a.) 1/2v b.) w-v c.) the length of w

2007-09-02 08:16:41 · 4 answers · asked by jehu22293 2 in Mathematics

Based on your understanding of plate tectonics, what changes would you predict to the earths appearance millions of years from now?

2007-09-02 08:14:37 · 7 answers · asked by :) 2 in Earth Sciences & Geology

in other words, r=????

2007-09-02 08:05:45 · 7 answers · asked by .nicole. 1 in Mathematics

a) 2 sin 45 + 4 cos 30 = ?

b) 4 + tan^2 (pi / 3)

please help and explain, I have lots of problems like this . . . book does a crappy job explaining things

thanks

2007-09-02 08:05:16 · 1 answers · asked by rickyricardoiscool 1 in Mathematics

2007-09-02 08:04:10 · 2 answers · asked by nocktherock2010 1 in Mathematics

2007-09-02 08:00:15 · 9 answers · asked by Anonymous in Mathematics

f(x) = (x + 1)^(2/3)

2007-09-02 07:57:32 · 2 answers · asked by Memories 4 in Mathematics

please be detailed :)

2007-09-02 07:56:21 · 5 answers · asked by Anonymous in Weather

2007-09-02 07:53:00 · 5 answers · asked by ahmedsyed2 1 in Chemistry

What are the n and l quantum numbers for Cadmium?

What is the energy of the n = 4 level of a H atom(in Joules)?

What is the energy of the n = 9 level of a H atom(in Joules)?

What is change in E for the n = 4 to n = 9 transition (in Joules)?

2007-09-02 07:52:51 · 2 answers · asked by Anonymous in Mathematics

The answer is tan(10) if that helps at all, and the directions say to simplify this using appropriate identities! (NOTE: The apostrophes do not denote derivatives... they're just there to keep everything aligned.)

' ' ' ' ' ' ' 2
------------------------
cot 5(1 - tan²5)

What baffles me is the random cot stuck in there. It's not attached to anything, there's no variable after it, etc. I transcribed it just how it is in the book. I don't know if it means the cot of 5(1 - tan²5) or what, but it's driving me crazy!

I'll pick a best answer TODAY if anyone can help me with this! Please explain what steps you're using if at all possible! Thanks!

2007-09-02 07:51:48 · 4 answers · asked by Anonymous in Mathematics

2007-09-02 07:49:37 · 5 answers · asked by abraymond5 1 in Mathematics

note: v=pi r^2*h

2007-09-02 07:45:40 · 6 answers · asked by .nicole. 1 in Mathematics

f(x)=x^3 + 3x, f(x+h) - f(x)/h, h is not equal to zero

1.When you FOIL (x+h)^3 what do you get?

2. Secondly, the book is showing the answer as "3x^2 + 3xh +h^2 + 3" I can not achieve this answer.

2007-09-02 07:45:25 · 2 answers · asked by Sam Dali 2 in Mathematics

i have to questions and both of them is about to find the slope of the tangent but with different point.

question nr. 1 : find the slope of the tangent line to each curve at the given point. x^2-y^2=16; (5, 3)

question nr. 2: find the slope of the tangent line to each curve at the given point: y^2+3x-8y+3=0; (4, 3)

plzzzzzzzzzzzz help me and wirte it with step by step how to do it plzzzzzzzzzzzzz .

2007-09-02 07:43:00 · 4 answers · asked by nice_ girl 1 in Mathematics