Science & Mathematics - 13 December 2007

if there was another galaxy after space, would you live there.

2007-12-13 05:20:53 · 8 answers · asked by sydney k 1 in Astronomy & Space

What is the derivative of
f(x) = x(2x+1)^2 ?

2007-12-13 05:20:16 · 2 answers · asked by Anonymous in Mathematics

4. Linda and Bill Gomez spent $100 on spruce trees. Some were blue spruce trees priced at $20 each, and the rest were green spruce trees priced at $10 each. How many of each kind of spruce did the Gomez’s buy?
a. 30g = 100
b. 30b = 100
c. 20b + 10g = 100
d. 10b + 10g = 100

5. Linda and Bill Gomez spent $100 on spruce trees. Some were blue spruce trees priced at $20 each, and the rest were green spruce trees priced at $10 each. How many of each kind of spruce did the Gomez’s buy?(Hint: There is more than one solution, but only one of the possible choices is correct.)
a. 2 blue and 4 green spruce
b. 2 blue and 5 green spruce
c. 3 blue and 4 green spruce
d. 4 blue and 3 green spruce

2007-12-13 05:18:45 · 5 answers · asked by fmlp 1 in Botany

2007-12-13 05:17:36 · 5 answers · asked by Tony W 4 in Astronomy & Space

can someone help me solve this inequality. I did it, but I dont think I did it right?

x^2 - 6x -2 < x - 8

thanks!

2007-12-13 05:17:34 · 8 answers · asked by Fuzzyglasses 3 in Mathematics

I have a 20kg Weight fixed to the end of a wire. If I was to lift the weight 1 Meter thus having 1 Meter of slack in the wire and let go of the weight. What will the force be on the wire when the weight stops. I'm looking for a formulas etc so I can size up either a new rope or alter the design of the weight on the end of the rope so it's not as heavy. I've tried several equations and have now got totaly confused as to which way to go.

2007-12-13 05:16:01 · 2 answers · asked by Dave T 1 in Engineering

Is it possible to couple to display devices wirelessly to get the display of the first device(connected to original ckt.) on the second device wirelessly.??
Or is there any other method?

2007-12-13 05:10:17 · 2 answers · asked by Vikas K 1 in Engineering

With the simple knowledge that Down's Syndrome is caused by a single chromosonal change, how is it even possible for complete chromosonal changes to bring about species to species changes? how can evolution explain both the addition of genetic material and the bringing about exact changes in both male and female (for mating)?
accepting, for the moment, that evolution could have produced a viable couple, how would they survive without similar parents to teach them to survive and to protect them, as most, not all, creatures alive now destroy radically different offspring?
I don't claim to be an expert so don't slam me for a question. that's what we are here for, right?

2007-12-13 05:08:51 · 8 answers · asked by athorgarak 4 in Biology

I just bought my girlfriend a Lavalamp, and I know I have to melt the wax inside in order for it to be fully working. I was just wondering though, does it have to be melted everytime she wants to use it?

2007-12-13 05:08:04 · 3 answers · asked by Asherleeen! 2 in Engineering

2007-12-13 05:05:03 · 3 answers · asked by Anonymous in Biology

I personally think they can be disproved by numerous things why do some believe they're spirits and skeptics what do you think? i will post my research etc. when i get alot of answers :) im curious to see what everyone thinks! i kind of just did post my thoughts on wiccan rider's previous question!

Ryan ~Paranormal Investigator/Researcher~
www.theprosonline.com

2007-12-13 05:02:15 · 11 answers · asked by teamhuntingevidenceofparanormal 2 in Paranormal Phenomena

2007-12-13 05:01:13 · 4 answers · asked by charles h 1 in Weather

alright, i understand that by drawing 2 right angle triangles in the first and second quadrants, with the sides labelled (a), (b), and (root of all a^2 + b^2) i can prove that
sin (pi / 2 + theta) = cos theta...........but now
using the same method, i need to prove that
csc (180 degrees + theta) = - csc theta

i dont understand how this is proven because everytime i draw my diagram, it doesnt work...


or how do i prove that
sin (pi - theta) = sin theta????

thanks in advance... i missed 2 days of classes and im so confused!

2007-12-13 05:00:59 · 3 answers · asked by Anonymous in Mathematics

2007-12-13 05:00:53 · 5 answers · asked by Karen C 1 in Zoology

2007-12-13 05:00:23 · 6 answers · asked by Jake L 1 in Engineering

2007-12-13 04:59:01 · 5 answers · asked by jessi 1 in Mathematics

I was looking back at a picture of myself as a baby and i couldn't believe it was me. I looked so beautiful, with a symmetrical square shaped face, pale white skin and big beautiful eyes. Now however, i have an egg shaped face dark skin and far from beautiful eyes. Why? why have i become so ugly and different and how can i change back?? Please help meeeee! Thank you in advance.

2007-12-13 04:57:07 · 3 answers · asked by Anonymous in Biology

2007-12-13 04:53:36 · 4 answers · asked by heather t 1 in Earth Sciences & Geology

I get most of the concepts but how come for electronegativity going up then down decreses the Electronegativity and going left to right increases it?

2007-12-13 04:51:50 · 2 answers · asked by Micky D 3 in Chemistry

six? eight? two? i dont know

2007-12-13 04:48:03 · 2 answers · asked by Rachel B 1 in Chemistry

guys there are so many situations where i come across this dilemma of having to convert square meters to running meters and i just cant. i know its pretty simple to convert square meter to square foot, but how to i convert it to running meter????

2007-12-13 04:47:13 · 14 answers · asked by kisna_96 1 in Engineering

why is xSin(1/x) same thing as sin(1/x) / (1/x) ?

2007-12-13 04:43:51 · 6 answers · asked by Anonymous in Mathematics

3^2 = 2 x 3+ 2 x 1+1
Using this expression, how could n^2 be expressed?

So far I have n^2=(n - 1) x n + (n-1) x (n-2) + (n-2) but I don't think it is correct. Help please?

2007-12-13 04:40:45 · 5 answers · asked by princessangel_janine 1 in Mathematics

b)16^y = 64^2y - 1

c)36^t-2 = 216^-2t

d)8^2x-1 = 16^x-1

Thank you

2007-12-13 04:38:04 · 1 answers · asked by Anonymous in Mathematics

I was just wondering,Im so rubbish a Maths lol

2007-12-13 04:37:41 · 23 answers · asked by Giggles! 4 in Mathematics

is it just glucose?
please dont give me long answers that don't answer the question @ all. thanks!

2007-12-13 04:32:08 · 12 answers · asked by taylorclueless. 3 in Biology

I am looking to try and constuct some plastic objects that I have in molds. I need the polmer mix to be able to be liquid when heated or alone and then add something or heat to make it a hard, malleable and not brittle plastic. Also fairly light.

Would Polyurathane work?

2007-12-13 04:30:40 · 1 answers · asked by Anonymous in Chemistry

http://i4.photobucket.com/albums/y111/ygolordned/physics.jpg

2007-12-13 04:30:19 · 5 answers · asked by ygolordned 1 in Physics

simplify: -10x - 3(x - 2) I got -13x - 6 Is that right?

Simplify: 6(y - 1) + 3 ( - 2y + 2) I got 0 is that right?

I'm stuck on solving

81 > - 9w

m/3 > - 9

p + 7 ≤ - 11

2007-12-13 04:26:47 · 6 answers · asked by Anonymous in Mathematics

If a <=-1, then, we can show a_n --> -oo
If a >= 0, this is a sequence of Riemann sums of f(x) = x^a over [0,1] and a_n --> Integral [0 to 1] x^a dx = = (x^(a +1))/(a +1) [ o to 1] = 1/(a +1)

My question is, what happens when a is in (-1, 0)? Then, this is not a sequence of Riemann sums over [0,1] because x^a is not defined at x = 0 when a < 0. It sems the limit is still 1/(a +1), but is this true?

2007-12-13 04:25:55 · 2 answers · asked by Anonymous in Mathematics