Science & Mathematics - 20 January 2007

need step by step answer if possible

2007-01-20 10:23:56 · 2 answers · asked by mustafizur15 1 in Mathematics

and if nasa wants to prove it why not just photo the flag they left behind ..supposedly

2007-01-20 10:23:50 · 17 answers · asked by Anonymous in Astronomy & Space

Simplify: (please do step by step)

1) ( ------ is division bar)

sinx 1 cosx
---------- + -------------
1 + cosx sinx


2)

cosxsin^2 - cosx
-------------------------
cosxcotx


( and just so i dont get diferent answers, 1. is cosx and 2. is
-cosxsinx but i cant figure out how to do it

2007-01-20 10:23:20 · 2 answers · asked by Icy 2 in Mathematics

2007-01-20 10:22:38 · 4 answers · asked by Anonymous in Engineering

my daughters doing a project and been to a lot of sites can't find them anywhere tried wikipedia and their links

2007-01-20 10:21:03 · 3 answers · asked by darstar 1 in Biology

We all know the world, the ground beneath our feet. This planet is finite. Fine, that's OK. But we are in space. If it doesn't end and it is infinite then, how come? There's no point just telling me it's infinite. Tell me how it is infinite. It doesn't make sense. Trouble is, if it is finite what is behind that, as per my previous question. Been thinking and mindf*cked about this questions since I was about 12 (many many years ago). Go on really try and imagine it and think about the ludicrousness of the whole concept of space and infinity. And then try and imagine how religion fits into it. These are people who don't bother thinking about this kind of thing and are so short sighted they just rely on their belief in God; as to really think about God would prove his none existance and throw up the kind of questions I am asking now

2007-01-20 10:20:41 · 15 answers · asked by Anonymous in Astronomy & Space

http://www.rasiba.com/pictures/misc/birds-edit2.jpg

2007-01-20 10:20:20 · 9 answers · asked by Anonymous in Zoology

2007-01-20 10:20:15 · 11 answers · asked by springomuftuf 1 in Astronomy & Space

An experiment consists of flipping a coin 5 times and noting the number of times that a heads is flipped. Find the sample space S of this experiment.

S =

How do you find the answer to this? is there some sort of formula? I have tried: 25,32,10,5,20,12,14,13,15,6,31,110

2007-01-20 10:18:34 · 1 answers · asked by C 2 in Mathematics

2007-01-20 10:17:28 · 16 answers · asked by no n 1 in Geography

Write in simplified radical form by rationalizing the denominator:

(2 * sqrt(2)+1)/(-5*sqrt(2)+3)

2007-01-20 10:16:58 · 5 answers · asked by Chazzy 3 in Mathematics

Is a career in demand????WHAT about the salary?????

2007-01-20 10:13:37 · 5 answers · asked by The Apostle 2 in Engineering

okay, we are doing some problems for physics..and im kind of lost...I need help because I have never taken a trig class in my life and this physics book I have doesnt help that much..heres the question.

1. A man walks 5 mi east, then 6 mi North and then 3 mi further East. Make a scale diagram of the man's path on graph paper.

I did this and got 14 mi.

part b) Calculate the straight-line distance from where the man started to where the man ends up. (Is this the same, grater than or less than your answer to part a.

I got 10 mi as my answer which is less than.

Now heres my trouble.

c) At his final position the man turns and points toward his starting point. What direction is he pointing? (Be clear and exact)

Okay I know to use inverse tan to get this and its 53.1 degrees west of south but im a bit confused, wouldnt this be the degrees of the angle, and it would actually be facing towards the opposite side and not towards the point that he started?

2007-01-20 10:12:27 · 5 answers · asked by hmmm 2 in Mathematics

2007-01-20 10:08:09 · 5 answers · asked by Anonymous in Chemistry

2007-01-20 10:05:49 · 4 answers · asked by Ellen T 1 in Physics

can you use that ratio to find the length of the last side of the triangle... i know you can use pythag. therom. but can you just use the ratio to??

2007-01-20 10:03:30 · 2 answers · asked by pointemotion35 1 in Mathematics

a. 2:1
b. 1:2
c. 4:1
d. 1:4

2007-01-20 10:02:14 · 2 answers · asked by last3member2002 1 in Mathematics

2007-01-20 10:01:55 · 3 answers · asked by Ellen T 1 in Physics

2007-01-20 10:00:43 · 9 answers · asked by reed d 1 in Engineering

2007-01-20 09:58:13 · 4 answers · asked by Anonymous in Mathematics

Hi there,

Does anyone know a good tutorial that will teach me how to change an equation, such as y = -3^2 +6x +3, to transformational form? I have searched Google and I cannot seem to find any tutorials that actually teach transformational form of quadratics.

2007-01-20 09:55:15 · 2 answers · asked by Brian 2 in Mathematics

2007-01-20 09:53:18 · 3 answers · asked by bu66ed 1 in Astronomy & Space

i know lots of guys there, and i think i can also do what they're doing.. tell me your experience having a female student in your class BSEE.. most of the time, do you treat them carefully or treat them like a guy.. any answer will be much appreciated...

2007-01-20 09:53:15 · 6 answers · asked by thirteen 1 in Engineering

2007-01-20 09:53:03 · 6 answers · asked by sully 2 in Mathematics

2007-01-20 09:52:23 · 2 answers · asked by mikeyplocky 2 in Chemistry

2007-01-20 09:51:37 · 5 answers · asked by ? 2 in Chemistry

2007-01-20 09:50:18 · 11 answers · asked by Prostidude 2 in Medicine

homework... your supposed to use trig....but is there any way i can show my work without using trig...such as if i had a test on it and i wasn't able to use a calculator. How would you find the sign sin, which is finding the ratio between two different lines using the degree of the two lines, without using a calculator??? Is it possible??

2007-01-20 09:49:19 · 9 answers · asked by pointemotion35 1 in Mathematics

okay, we are doing some problems for physics..and im kind of lost...I need help because I have never taken a trig class in my life and this physics book I have doesnt help that much..heres the question.

1. A man walks 5 mi east, then 6 mi North and then 3 mi further East. Make a scale diagram of the man's path on graph paper.

I did this and got 14 mi.

part b) Calculate the straight-line distance from where the man started to where the man ends up. (Is this the same, grater than or less than your answer to part a.

I got 10 mi as my answer which is less than.

Now heres my trouble.

c) At his final position the man turns and points toward his starting point. What direction is he pointing? (Be clear and exact)

Okay I know to use inverse tan to get this and its 53.1 degrees west of south but im a bit confused, wouldnt this be the degrees of the angle, and it would actually be facing towards the opposite side and not towards the point that he started?

2007-01-20 09:48:25 · 2 answers · asked by hmmm 2 in Physics

2007-01-20 09:48:18 · 1 answers · asked by jUgGaLette!!! 2 in Physics