Science & Mathematics - 9 January 2007

Concurrency Theorems In the Theoritical Geomentry

2007-01-09 18:21:43 · 5 answers · asked by jan_ani 1 in Mathematics

Math

2007-01-09 18:20:12 · 2 answers · asked by Mr.Archie G 2 in Mathematics

is there more or less thc in either, or what, how is it that bud is legal and marijuana is not, i dont get it?

links to sites explaining would be useful

2007-01-09 18:11:46 · 4 answers · asked by snrub de 2 in Botany

2007-01-09 18:10:12 · 2 answers · asked by robert t 1 in Weather

I'm building a model brigde so I need to know. If you know any other types of triangles (or any thing else) please tell me. :)

2007-01-09 18:08:56 · 7 answers · asked by Anonymous in Mathematics

i want a formula (show working)
eg 1+2+3........n=n(n+1)/2

2007-01-09 18:08:42 · 2 answers · asked by Anonymous in Mathematics

Why is it that three weeks after the Solstice dawn is still later than it was then? Sure, the daylight is longer because sunset is later in the afternoon, but the latest dawn doesn't arrive until about New Year's Day and today's is only 3 minutes earlier than it was on Jan 1. Why don't dawn and sunset widen after the shortest day at an equal pace?

2007-01-09 18:06:33 · 3 answers · asked by MBK 7 in Weather

up and down africa each season

2007-01-09 18:05:06 · 7 answers · asked by albert r 1 in Zoology

characteristics such as eye color, height, weight, hair and skin color are examples of BLANK BLANK because several genes act togather to influence a trait

2007-01-09 18:04:05 · 4 answers · asked by aZn TeAsE 2 in Biology

9x^2 - 14x - 4 = 0

2007-01-09 18:02:04 · 7 answers · asked by Help 1 in Mathematics

2007-01-09 17:58:13 · 9 answers · asked by xfxjohn 1 in Physics

2007-01-09 17:53:23 · 4 answers · asked by MD 1 in Mathematics

“What is an equation.

What is the degree of equation and relationship between degree and roots of equation? Relationship between the coefficients and roots.

Types of equations and any five methods (brief description)to solve these equations?”

2007-01-09 17:51:11 · 1 answers · asked by nizam_cl 1 in Mathematics

Just curious, does any one know?

2007-01-09 17:39:08 · 8 answers · asked by LaInzane1 1 in Biology

what are the diffences between the two and what are the similarities between the two.

2007-01-09 17:37:34 · 7 answers · asked by Anonymous in Biology

whats the differences between the two and what are the similarities between the two?

2007-01-09 17:32:16 · 8 answers · asked by Anonymous in Biology

the elevator of a 4-floor building leaves the first floor with 6 passengers and stops at all of the remaining 3 floors. If it is equally likely that a passenger gets off at any of these 3 floors, what is the probability that, at each stop of the elevator, at least one passenger departs?


( explaination please!!)

2007-01-09 17:30:30 · 5 answers · asked by quz_us 1 in Mathematics

2007-01-09 17:22:24 · 9 answers · asked by MexicanW 1 in Zoology

I believe it does, but I'm not sure.

2007-01-09 17:22:01 · 4 answers · asked by victoria 1 in Mathematics

can anybody tell me the result of this expression?
(y/2+z/3)(y/2+z/3)

the answer from my keybook is y to the second power/4+y to the Z power/3+Z to the second power/9

but I just don't understand why it's y to the Z power, it isn't logical, is it the key wrong?

2007-01-09 17:21:54 · 7 answers · asked by liangjizong22 1 in Mathematics

2007-01-09 17:21:25 · 5 answers · asked by vikas 1 in Mathematics

2007-01-09 17:20:21 · 6 answers · asked by onin 1 in Other - Science

2007-01-09 17:19:50 · 3 answers · asked by good friend 1 in Physics

Cathy has a collection of dimes and quarters. The number of dimes equals the number of quarters. She has a total of $2.80. How many of each coin does Cathy have?
[Hints: Let n = number of dimes. Since each dime has a value of 10 cents, the value of n dimes is 10n. Since the number of quarters is also n, the value of n quarters is 25n. Also change the value of $2.80 into cents.]

2007-01-09 17:19:21 · 4 answers · asked by Jennifer 1 in Mathematics

I also want to know did the sun create all life on planet earth?

2007-01-09 17:18:09 · 5 answers · asked by black pharoahs of egypt 2 in Astronomy & Space

2007-01-09 17:18:05 · 14 answers · asked by Ah Boi 3 in Astronomy & Space

2007-01-09 17:17:49 · 10 answers · asked by miissy-iinn0ceNT 1 in Zoology

Lamar's summer job is mowing lawns for a landscaper. His pay is $7.50/hour. He also makes $11.25/h for any time over 40 hours he works in one week. He worked 40 h last week plus n overtime hours and made #339.38. How many overtime hours did he work?

2007-01-09 17:16:26 · 4 answers · asked by Jennifer 1 in Mathematics

2007-01-09 17:14:57 · 11 answers · asked by good friend 1 in Physics

I need help on a few identity problems that I consider EXTREMELYchallenging and confusing. Here they are:

Note: I used the letter "O" in replacement for theta.

> (cotO / 1 - tanO) + (tanO / 1- cotO) = 1 + tanO + cotO
> sinOcosO / cos²O-sin²O = tanO / (1-tan²O)
> sinO-cosO+1 / sinO+cosO-1 = sinO+1 / cosO
> secO-cosO / secO+cosO = sin²O / 1 + cosO
> (tanO-cotO) / (tanO+cotO) + 2 cos²O = 1
> secO / 1 + secO = 1 - cosO / sin²O

Thanks for your help!

2007-01-09 17:07:00 · 5 answers · asked by Anonymous in Mathematics