Science & Mathematics - 20 December 2007

2007-12-20 23:58:46 · 12 answers · asked by Anonymous in Zoology

2007-12-20 23:57:32 · 2 answers · asked by zaCk_ s 1 in Engineering

how do i integrate square root (4-x^2), with lower limit 0, upper limit pi/2, w/o using substitution? and if i wna use substitution, how do i noe which to choose? y is my tcher's substitution 2sin diter?

2007-12-20 23:50:26 · 3 answers · asked by blahhs 1 in Mathematics

x^2-6x=16


2x^2-3x+1=0


x^2-x-1=0

2007-12-20 23:49:08 · 3 answers · asked by Anonymous in Mathematics

2007-12-20 23:45:59 · 3 answers · asked by abhi 1 in Engineering

okay this is watsup, am in ma 3rd year of mechanical engineering here in Canada. . i just want to know what type of engineering would sort of put me in charge of a project for instance, like an upper hand, like a leader kinda overseer position. if u get ma drift. i was thinkin of doing Systems Engineering, not the one that has to do with comp sci stuff and all of that software. the mech. eng. oriented one, like control systems kinda thing.

2007-12-20 23:40:34 · 5 answers · asked by Funk-Ski Biznez Man 4 in Engineering

A friend sent me a link just thought I would share them with everyone, how coooool are these pics?

http://www.texasjim.com/NASApix/NASA%20pix.htm

2007-12-20 23:24:32 · 16 answers · asked by Johno 5 in Astronomy & Space

Ever wonder that?

2007-12-20 23:20:10 · 11 answers · asked by Daydreamin' 4 in Astronomy & Space

its for school and idk the answer.

2007-12-20 23:08:08 · 8 answers · asked by Anonymous in Geography

the month[s of jan apr jul oct]

ie what is the neatest fit that could be arranged, and what would that equate to in the number of days you would have to delete from one year to achieve the optimum fit?

at present they fall on the 21st or 22nd of the month, so my quick rough maths says it would be somewhere in the region of 10 days.

who can work this out and show me the best fit?

2007-12-20 22:53:43 · 4 answers · asked by Anonymous in Other - Science

Solve for the unknown: s/39.0 = 13.0/2.6
Now i am really confused...help.
Thank you all so very much

2007-12-20 22:52:25 · 3 answers · asked by Sis F 6 in Mathematics

2007-12-20 22:48:54 · 14 answers · asked by david c 1 in Weather

2007-12-20 22:40:07 · 6 answers · asked by endgame1915 3 in Geography

I see answers that suggest ghosts are not the essance of those who were once alive and many claim there are different definitions . Also they claim that ghosts being spirits of people once alive is a modern concept. Where does this come from? Ghosts were thought to be dead people for centuries.

I am just courious where this concept of ghosts not being dead people comes from. I think that is a modern concept.

I know not all ghost sightings are ghosts some could be views of another deminsion etc but the idea that ghosts are never dead people seems and odd theory to me. Thanks in advance

2007-12-20 22:31:28 · 6 answers · asked by Anonymous in Paranormal Phenomena

I hear most people at school says maths, but i come on here and everyone says math..

I personally say maths..

2007-12-20 22:30:57 · 20 answers · asked by Mitch M 2 in Mathematics

2007-12-20 22:30:54 · 3 answers · asked by Anonymous in Weather

Lets say me and my twin both woke up at eight in the morning. I went to bed at 1 a.m and my twin went to bed at 12 am. Now when you think of sleep time seems to be non-existent. Does that mean my twin is actually one hour ahead of me?

2007-12-20 22:25:23 · 3 answers · asked by Some Dude with a computer 1 in Other - Science

2007-12-20 22:14:50 · 6 answers · asked by Archie l 2 in Biology

Consider the matrices,3A=(3 -6), and, 1/2B=(1.5 3)
>>>>>>>>>>>>>>>>>>>> (9 0) >>>>>>>>> (0.5 -2)

(a) Find the matrices A and B, then compute the matrix, 0.5A – 3B.


(b) Find the matrices, A^–1, B^–1, (AB)^ –1, if possible.



(c)Compare det[(A – B)^3 ], with det[(B – A)^3]. Is this relation specific for only these matrices, or holds in general for all square matrices? Justify your answer.

2007-12-20 22:07:47 · 3 answers · asked by Tahany S 1 in Mathematics

2007-12-20 22:06:11 · 5 answers · asked by Anonymous in Astronomy & Space

Constantly gravitate towards me? I reckon this is a bit paranormal...They always seem to stop in mid step, stare, and run straight at me; male dogs even tried humping me...And just now I was at the beach (Stanwell Park Sth Sydney - Awesome!) and this dog would not leave my side, and started attacking (teeth barring and going for the neck) about 10 others that were trying to approach me (I was flattered that he felt like protecting me but come on, what's up with this?)

I love them, but they seem to love me even more...

2007-12-20 21:45:31 · 15 answers · asked by mima... 4 in Paranormal Phenomena

2007-12-20 21:41:35 · 16 answers · asked by Anonymous in Engineering

When the Japanese first encounter the red hair and blue eyes(foreign sailors) they got so scare that they wonder what kind of creature it is. Today, we pretty much seen all kinds of people around the world and they are not new to us anymore. What if tomorrow we discover that there are other intelligence that we have never contact before. It is possible? What possible feature you think they might have?

2007-12-20 21:32:07 · 9 answers · asked by Hello World 2 in Astronomy & Space

Apart from height, width, length and time. How many dimensions could possible be? And how many do you think there is? Why?

2007-12-20 21:23:28 · 4 answers · asked by Hello World 2 in Other - Science

Use the definition of the limit to find values of theta that correspond to epsilon = . 75

Round down the answer to the nearest thousandth

lim (4 + x - 3x^3) = 2 as the limit approaches 1

2007-12-20 21:22:57 · 1 answers · asked by Anonymous in Mathematics

2007-12-20 21:21:22 · 5 answers · asked by Anonymous in Geography

2007-12-20 21:18:19 · 5 answers · asked by cat 1 in Geography

2007-12-20 21:08:54 · 9 answers · asked by anu 1 in Astronomy & Space

2007-12-20 20:51:42 · 5 answers · asked by Know_pro 1 in Mathematics

How do I Solve:

2t^2 - 3 = t

(If there is more than one solution, separate them with commas.)

Thanks!

2007-12-20 20:47:10 · 7 answers · asked by Anonymous in Mathematics