Science & Mathematics - 3 December 2007

(a+b)2

2007-12-03 07:45:44 · 1 answers · asked by Anonymous in Mathematics

2007-12-03 07:45:43 · 3 answers · asked by emmiloulou 1 in Astronomy & Space

I have heard it said that, No two snow flakes are ever the same..When you consider that snow has been falling since time immemorial, I find that hard to believe..Can you convince me otherwise?

2007-12-03 07:44:38 · 9 answers · asked by vovo 6 in Weather

thank-you.....
prove:

1 - sin2A / cos2A = 1 - tanA / 1 + tan A

2007-12-03 07:42:46 · 3 answers · asked by Anonymous in Mathematics

Please help me with this and show the work. This is a fraction.Thanks

6 3/4
+3 1/8
_______

2007-12-03 07:41:17 · 19 answers · asked by Anonymous in Mathematics

How do you also find on the calculator? Thanks.

2007-12-03 07:39:04 · 5 answers · asked by ilovesoccer 1 in Mathematics

SAFELY meaning without exploding, its for my science class... it can't be anything with NaCl or H2O since the examples are already in the book, give me something very Interesting, I want a big chemical reaction but no explosion... Cuz I am gonna make an experiment but I dont want to blow somebody's head off....

2007-12-03 07:32:39 · 3 answers · asked by Anonymous in Chemistry

2007-12-03 07:31:40 · 10 answers · asked by Anonymous in Chemistry

My mother is working in a high school and she is helping students that need extra help. They had a math problem that my mother just knew that I could solve. I can't so I am here. We know that the answer is B. We just don't know why. Thank you for all your help.

The sides of a rectangle are in the ratio 5:7 and the perimeter of the rectangle is 96 cm. What is the area of the rectangle?

a. 980 cm2 c. 462 cm2
b. 560 cm2 d. 418 cm2

2007-12-03 07:30:30 · 8 answers · asked by onefootnaked 4 in Mathematics

What does the Fourier sine series for f(x)=x^2 is on (0,Pi)? Can you please explain your steps? Also, what does the series converge to at x=Pi? thx in advance!:)

2007-12-03 07:29:43 · 1 answers · asked by homeboy187nic 2 in Mathematics

Find the area between the curves given by

x = -y^2 + 3y +4 and

x = y + 1 .

2007-12-03 07:29:20 · 1 answers · asked by bradm_127 1 in Mathematics

What would be AI mathematics ?

2007-12-03 07:29:17 · 3 answers · asked by T C 1 in Engineering

How do I solve this polynomial inequality?

(x – 4)(x + 2) > 0

2007-12-03 07:27:25 · 2 answers · asked by Babygurl91 1 in Mathematics

5 paces east (0deg)
7 paces north east (45deg)
10 paces west (180deg)
7 paces north west (135deg)
I graphed it an the resultant is 117deg 11.5 paces
How do you add these vectors with the component method???

2007-12-03 07:27:11 · 1 answers · asked by jabetz1222 4 in Mathematics

2007-12-03 07:26:32 · 4 answers · asked by Jamie S 1 in Other - Science

Why is the current in an incandescent bulb greater immediatley after it is turned on than it is a few moments later?

2007-12-03 07:24:39 · 3 answers · asked by Anonymous in Physics

2007-12-03 07:23:36 · 10 answers · asked by Anonymous in Medicine

whats the derivitive of 3xsin(x)-2x ?

2007-12-03 07:19:25 · 3 answers · asked by Anonymous in Mathematics

2007-12-03 07:18:51 · 6 answers · asked by Anonymous in Mathematics

I'sn't this Drug dealing on a National scale?

2007-12-03 07:18:31 · 14 answers · asked by Anonymous in Medicine

According to the ABMS (American Board of Medical Specialties) and ABPlsurg.org (American Board of Plastic Surgeons) Dr. Rouchdi Mohammad Rafai is NOT certified.

All of his websites claim he is certified. How does he get away with this?????

See www.drrifaihorrorstory.

2007-12-03 07:18:20 · 2 answers · asked by doeel 2 in Medicine

Lim ( 7/ln(x-6) - 7/x -7)
x->7

L'H rule is required I guess, I've spentnan hour on it already. Please help the answer is 7/2 but I can't seem to get it.

2007-12-03 07:18:01 · 1 answers · asked by Crew served weapon 2 in Mathematics

What is the volume of a balloon containing 0.37 moles of gas at 25,000 ft if the pressure is 322 torr and -47 °C? Report your answer to the nearest tenth of a liter (one decimal place). (Units: L)
PV=NRT

N=0.37 moles
P= 0.42368421052631578947368421052632
T= = 226.15˚K
R= .0821

0.42368421052631578947368421052632 (P) *V= (0.37 moles)*(.0821)*( 226.15˚K)
V= (0.37 moles)*(.0821)*( 226.15˚K)

V=16.2 L

2007-12-03 07:12:45 · 1 answers · asked by io 1 in Chemistry

to the periodic table

2007-12-03 07:11:45 · 3 answers · asked by Jaz 1 in Other - Science

A square sheet of metal has an area of 196 square inches. What is the length of each side?

The length of a swimming pool is to be three times the width. If the depth is to be a constant 4 feet and the volume is to be 4800 cubic feet, find the lenth and width.

2007-12-03 07:10:52 · 6 answers · asked by ??? 4 in Mathematics

5 paces east (0deg)
7 paces north east (45deg)
10 paces west (180deg)
7 paces north west (135deg)
I graphed it an the resultant is 117deg 11.5 paces
How do you add these vectors with the component method???

2007-12-03 07:09:08 · 1 answers · asked by jabetz1222 4 in Mathematics

1. The 3p subshell begins filling at element 13.
2. The 4s subshell becomes completely filled at element 19.
3. The third shell becomes completely filled at element 18.
4. More than one of the above answers are correct.
5. None of the above answers are correct.

2007-12-03 07:08:39 · 2 answers · asked by Anonymous in Chemistry

Escape velocity on the surface is 11.2 km/s.

If a hole is drilled to the center of the Earth, then what initial velocity should have the projectile launched from the center of the Earth in order to escape to the infinity?

2007-12-03 07:08:38 · 3 answers · asked by Alexander 6 in Physics

Your friend says that a battery supplies the electrons in an electric circuit. Do you agree or disagree? Defend your answer.

2007-12-03 07:08:10 · 5 answers · asked by Anonymous in Engineering

2005 x 2003-2004^2=-1 PROOF???

2007-12-03 07:06:47 · 4 answers · asked by Anonymous in Mathematics