Science & Mathematics - 7 December 2006

Why must we learn Math when we can use the calculator?
Well at least we can learn basic aspects of stuff... but why must we go into such advanced math? It's crazy!!!!

btw... i'm ok-ok with math... i'm not really good at it but I managed to pass =]...

2006-12-07 18:44:14 · 8 answers · asked by silvs 5 in Mathematics

g(x)= x^4 - 4x^3 - 2x^2 +12x +9
p(x)= x^5+2x^4+x^3-x^2-2x-1

2006-12-07 18:43:32 · 2 answers · asked by Anonymous in Mathematics

Where I am it's foggy and cloudy, so what about the rest of you? If you do see it where are you?http://spaceweather.com/

2006-12-07 18:42:44 · 2 answers · asked by Susan M 7 in Astronomy & Space

Find the integral from 0 to 1 of f(2x+1) dx
If the integral from 1 to 2 of f(x) dx = 4

Thanks for help, it's greatly appreciated as always! :)

2006-12-07 18:42:02 · 5 answers · asked by thesekeys 3 in Mathematics

ethylene, methane, octane, acetylene

2006-12-07 18:41:28 · 4 answers · asked by Anonymous in Chemistry

integral of 48sinxcosx dx from 0 to pi/6

thanks for the help :)

2006-12-07 18:39:25 · 2 answers · asked by thesekeys 3 in Mathematics

The primary omponent of this mixture is
methanol, ethanol, rubbing alcohol, gasoline

2006-12-07 18:38:38 · 3 answers · asked by Anonymous in Chemistry

Watch a flock of birds fly - they all fly together and change direction simultaneously. Schools of fish do the same thing. Humans don't though - they get into collisions. Explanation?

2006-12-07 18:38:22 · 4 answers · asked by lip11 3 in Zoology

Evaluate the definitely integral by expressing it in terms of u and evaluating the resulting integral using formulas from geometry.

The integral is from (pi/3 to pi/2) and it is of

sin(theta)root(9-36cossquaredtheta) dtheta

use u =6costheta

Thanks so much for help everybody! Oh and decimal answers are acceptable. thanks. :)

2006-12-07 18:37:56 · 1 answers · asked by thesekeys 3 in Mathematics

ethanol, ethylene glycol, glycerol, gasoline

2006-12-07 18:35:53 · 7 answers · asked by Anonymous in Chemistry

say I float a bloon from point A at 5000 meters above sealevel and somehow maintain it constant will I be able to reach another place as the earth rotates below it ?..sounds crazy ?

2006-12-07 18:33:46 · 1 answers · asked by victor_04 2 in Earth Sciences & Geology

what would the general form(x=(x,y,z)) of a bottle that can be made from these two sources
North End manufactures bottles from the mixture: 92% white glass, 6% brown glass, and 2% green glass
West Sidemanufactures botlles mixture: 70% white glass, 20% brown glass, and 10% glass.

2006-12-07 18:30:31 · 2 answers · asked by joanne j 1 in Mathematics

Problem 1:Cindy has 30 coins, consisting of dimes and quarters, that total $5.10. How many coins of each kind does she have?


Problem 2:For moving purposes the Hendersons bought 27 cardboard boxes for $78.50. There were two kinds of boxes; the large ones cost $5.50 per box and the small ones were $ 2.00 per box. How many boxes of each kind did they buy?

Problem 3:Suppose that one solution contains 50 % alcohol and another solution contains 80% alcohol. How many liters of each solution should be mixed to make 4.5 liters of a 70 %alcohol solution?

I could come up with a answer to 1 of these i was wondering if anyone knew how to solve all or 1 or 2. thanks for your time

2006-12-07 18:30:23 · 4 answers · asked by sillygram29 1 in Mathematics

Ammonia has a boiling point of -33.4 degrees Celsius, so why would it be less effective in a heating system?

2006-12-07 18:29:49 · 5 answers · asked by french t 1 in Chemistry

2006-12-07 18:27:37 · 5 answers · asked by Anonymous in Chemistry

2006-12-07 18:26:07 · 3 answers · asked by dinh h 1 in Biology

A truck driver is transporting a fully in-closed trailer full of birds. He knows he is over weight so he pulls over to the side of the road before the scale and bangs on the trailer, causing the birds to go into flight. He then drives over the scales. Did the weight of the trailer change?

2006-12-07 18:24:16 · 6 answers · asked by think650 1 in Physics

create largets possible number using the following eight things..
use ur imaginations...

1 2 3 4 ( ) . -

2006-12-07 18:22:37 · 6 answers · asked by nss280 2 in Other - Science

Imagine you are in a closed rotating spaceship. You could tell exactly how fast you are rotating, and by deduction from the ship dimensions and forces, you could tell your absolute velocity. Or have I missed something?

2006-12-07 18:22:05 · 8 answers · asked by Rich 2 in Physics

Which ion is more highly hydrated?

Na+ or Mg2+?
Fe2+ or Fe3+?

Could someone explain how I could tell the difference?
Thanks

2006-12-07 18:22:02 · 2 answers · asked by wazlakzz 1 in Chemistry

The scale factor of triangle AVB to triangle NVK is 5:8. If VA= 2.5 and VB = 1.7, then VN = ?

2006-12-07 18:20:28 · 3 answers · asked by Kate! 3 in Mathematics

what is the math formula to calculate the sea level, in term of when it will be high tider or low tide, it will be useful for fishing purpose.

2006-12-07 18:17:48 · 2 answers · asked by Anonymous in Mathematics

2006-12-07 18:16:19 · 7 answers · asked by lizzey_layzell 1 in Mathematics

In a class of 38 students, the number of females is two more than five times the number of males. How many females are there in the class! Does anyone know how to solve this! Thanks

2006-12-07 18:16:02 · 5 answers · asked by Anonymous in Mathematics

(-2x^-1y^-2)^-2 / (x^-4y^2) times (x^4y^2 / x^2y^-1)^-1 ?

2006-12-07 18:14:45 · 4 answers · asked by o_O 1 in Mathematics

A small sphere of wood with a density p=0.40 g/cm^3 is held at rest well under the surface of a pool of water. What is the magnitude of the initial acceleration of the sphere when released?

Possible Ans:
a.)15 m/s^2
b.)9.8 m/s^2
c.)33 m/s^2
d.)23 m/s^2
e.)3.4 m/s^2

2006-12-07 18:13:57 · 1 answers · asked by Tindallshi 2 in Physics

Problem:

Y= -5X - 3
3X - 2Y= -72


Thanks for your help!

2006-12-07 18:13:44 · 8 answers · asked by Anonymous in Mathematics

2006-12-07 18:13:29 · 25 answers · asked by shunti 1 in Earth Sciences & Geology

2006-12-07 18:12:21 · 12 answers · asked by Bambi 3 in Biology

just need to know how to find x in the problem above? thanks

2006-12-07 18:10:45 · 3 answers · asked by Anonymous in Mathematics