Science & Mathematics - 1 September 2007

I have been asking for help in my math problems yet some people just answer that they won't answer or do my HOMEWORK even though it's not homework at all...They are too narrow minded I just wanna compare my answers to theirs...it's even tiring to type the questions in math especially exponents.

So, why is this site called answers.yaoo.com whenin fact people don't answer well...they even insult others instead of helping them. I just want to voice out my opinion. Thank you for listening.

2007-09-01 21:36:09 · 6 answers · asked by Anonymous in Mathematics

the motor would be used to pump water from a well to an over head tank about 12 feet high.

2007-09-01 21:35:19 · 4 answers · asked by ian 1 in Engineering

Why arent' we thrown in space while the Earth is rotating fast?
i Know it's because of gravity but can Please someone explain More?
maybe, like 5 sentences..

2007-09-01 21:35:08 · 7 answers · asked by micah :P 2 in Astronomy & Space

how do i solve limits that involve more than 1 variable eg limit of (x,y) ->(0,0) of (2x^2 * y) / (x^3 +4y^3)

2007-09-01 21:33:08 · 3 answers · asked by jon 1 in Mathematics

X+Y=78
Y-X=20

x*ysquared

2007-09-01 21:32:23 · 4 answers · asked by ♥Come Break Me Down♥ 2 in Mathematics

2007-09-01 21:30:19 · 2 answers · asked by james m 1 in Earth Sciences & Geology

2007-09-01 21:02:12 · 10 answers · asked by Preethikrish 1 in Mathematics

Please tell me the answer and how to do it!

I'm desperate!

"On a ferry crossing, three cars and two caravans pay £405, and seven cars and three caravans pay £795. How much would five cars and four caravans pay?"

2007-09-01 21:01:23 · 9 answers · asked by Hermione Granger 4 in Mathematics

The manager of a large apartment complex knows from experience that 100 units will be occupied if the rent is 320 dollars per month. A market survey suggests that, on the average, one additional unit will remain vacant for each 5 dollar increase in rent. Similarly, one additional unit will be occupied for each 5 dollar decrease in rent. What rent should the manager charge to maximize revenue?

----
The answer I got was 460 but that doesn't seem right at all.
Any help? Suggestions?
Thanks!

2007-09-01 20:55:15 · 4 answers · asked by Anonymous in Mathematics

does earth have any upper cover called sky if so sky is transparent? does the sky common for the whole universe

2007-09-01 20:53:02 · 7 answers · asked by Anonymous in Astronomy & Space

2007-09-01 20:47:52 · 6 answers · asked by avenger 2 in Mathematics

a) c^ + 2/c - 3

b)6/x + 2y

c)3/4x - 2y


I've read somewhere that a variable under the division bar, which is in the denominator, can not be a polynomial. I even don't know why. Help?

What about the letter c question, the variable "x" is located parallel to the division bar which is between the numerator and denominator. Is that still a polyomial?

2007-09-01 20:44:04 · 7 answers · asked by Anonymous in Mathematics

How many Milligrams are in a :
Teaspoon?
Tablespoon?

2007-09-01 20:39:58 · 4 answers · asked by Anonymous in Mathematics

pls show the steps

2007-09-01 20:34:34 · 3 answers · asked by Anonymous in Mathematics

it was a very large black spider with a bright orange mark on its back and shiney and smooth not hairy like a trianchula

2007-09-01 20:34:15 · 3 answers · asked by spiritwindoflove 1 in Zoology

pls show the steps

2007-09-01 20:32:24 · 4 answers · asked by Anonymous in Mathematics

Find the x- and y-intercepts of the graph of (x + 2y)(x - 2y) = 1 .

a. x-intercept 1, y-intercept 1/ 2 (2 is a squareroot)
b. x-intercepts ±1, y-intercepts ±1/ 2 (2 is a squareroot)
c. x-intercept -1 , no y-intercept
d. x-intercepts 1, no y-intercept
e. x-intercepts ±1, no y-intercept

2007-09-01 20:29:40 · 5 answers · asked by Anonymous in Mathematics

Find the equation of the circle with center (-1,7) and radius 2 .

a. x ^2 + 2x + y ^2 - 28y + 50 = 0
b. x ^2 - 2x - y ^2 - 14y - 48 = 0
c. x ^2 + 14x + 48 + y ^2 - 2y = 0
d. x ^2 - 14x + 48 + y ^2 - 2y = 0
e. x ^2 + 2x + y ^2 - 14y + 48 = 0

2007-09-01 20:26:06 · 2 answers · asked by Anonymous in Mathematics

What is the definition of proof? I would like to prove that square root 2 is rational,reaching to the conclusion that it's actually irrational instead, just to go through the process of proof because I don't understand what the book is telling me. We skipped the page but I believe I should go over it because it is important to go through the problem solving process.
book just gives unorganized steps and its not even details, i would like to put it in 2 colums like geometry. how can i do that?
assume that square root 2 is rational.
then square root 2 can be expressed as p/q where p and q are integers.

assume that p/q is in its lowest terms.

let p/q = square root 2

squaring p^2/q^2 = 2 (canceling out the root)
so p^2=2q^2

this is where i got lost... it said p^2 is even, then p must also be even so one can write
p=2m where m is an integer
4m^2 = 2q^2 (substituting p^2 = 2q^2)
2m^2=q^2
so q^2 s even and therefore q is even. but if both p and q are even then p/q is not low term

2007-09-01 20:25:57 · 4 answers · asked by Tanja 2 in Mathematics

Determine which of the points (1,-1), (2,-2), and (-3,1) are on
the graph of the equation y (1 + xy) = 6 .

a. (1,-1)
b. (1,-1), (2,-2)
c. (2,-2)
d. (2,-2), (-3,1)
e. (1,-1), (-3,1)

2007-09-01 20:24:06 · 4 answers · asked by Anonymous in Mathematics

2007-09-01 20:16:02 · 2 answers · asked by Nap 1 in Mathematics

2007-09-01 20:12:31 · 2 answers · asked by zyntax24 1 in Mathematics

2007-09-01 19:48:58 · 9 answers · asked by kec g 1 in Zoology

2007-09-01 19:41:05 · 41 answers · asked by anil m 6 in Earth Sciences & Geology

I am arash I am 20 years

2007-09-01 19:39:50 · 21 answers · asked by Anonymous in Geography

for as long as i can remember ive had encounters on a regular basis with things that seem otherworldy. ive seen an apparition walk past the doorway of our kitchen every night at exactly 11:02, ive heard childrens voices from the attic and smelled a very strong vanilla scent up there since we moved in which my mom and sister both claim they dont smell but i mean its clear as can be. ive also had a fully closed bathroom door open when ive been home alone. on top of that i awoke 3 seperate times to open my eyes and see a dark shadowy figure over me and the worst case of goose bumps imaginable. then at my old house i had many different encounters and at 2 friends houses as well. one while spending the night we went for a hike through his wood and i saw something white parallel with us but there was no oneand it was night time. then the other while house sitting the door began to shake and the dogs went crazy like someone was there but no one. could all these experiences mean anything?

2007-09-01 19:31:29 · 12 answers · asked by kewlrocker0485 1 in Paranormal Phenomena

2007-09-01 19:31:14 · 6 answers · asked by bjhjr07 2 in Zoology

This is not a religious debate.

2007-09-01 19:16:47 · 6 answers · asked by Anonymous in Biology

there is a massive spider on my window sill, it only comes out at night it has a reddish tone with yellow on its back . its backside is round and huge... by round i mean circular not oval... do you have any idea what kind it is...

2007-09-01 19:15:13 · 6 answers · asked by jack jack 7 in Zoology

What is the sum of the measures of the vertex angles of a 27-sided polygon? My answer came out as 166.67 degrees. Did I use the right formula?

2007-09-01 19:12:34 · 3 answers · asked by Jen 4 in Mathematics