Science & Mathematics - 11 October 2007

2007-10-11 05:57:42 · 6 answers · asked by Jefferson R 1 in Geography

whats is fungi

2007-10-11 05:57:13 · 4 answers · asked by Anonymous in Biology

Here it is:

3654 times 84739 divided by 667483292 subrtact 489678745864764647862656346 plus 3746465382B plus 8458473589794375947 to the 475845874390848th power, if B=83637525.84763839474562353679543674656897532

2007-10-11 05:55:09 · 6 answers · asked by Alan W 1 in Mathematics

its an identity. Ive been tryin 4 ages but I cant find a way??? any help please??

2007-10-11 05:54:17 · 3 answers · asked by cool guy 1 in Mathematics

2007-10-11 05:52:59 · 2 answers · asked by Carter.J 1 in Earth Sciences & Geology

2007-10-11 05:51:45 · 2 answers · asked by Carter.J 1 in Earth Sciences & Geology

relative to origin O

OA = (-1, 3, 5) OB = (3, -1, -4)

ON = ( 5, 1, -3)

The line L passes through A and is parallel to OB. the point N is the foot perpendicular from B to L


L = (-1 , 3, 5) + t ( 3, -1, -4)

length BN is 3.

how to find the equation of the plane containing A, B & N?


Thanks

2007-10-11 05:48:02 · 4 answers · asked by Mystic healer 4 in Mathematics

∫xlnx dx

Please look at this picture
http://img529.imageshack.us/img529/6642/49348752qi6.jpg

b=1 and a=0

2007-10-11 05:48:01 · 5 answers · asked by Anonymous in Mathematics

9a^3-225a=0

i assume you factor out the 9, so it becomes

9(a^3-25)=0

but then what?

2007-10-11 05:47:44 · 8 answers · asked by Anonymous in Mathematics

Give the solution:

2x-5y=5
10x-5y=20

I think there may be no solution but keep coming up with different alternatives. Please helllllllllllllp!!

2007-10-11 05:44:36 · 9 answers · asked by It's a girl due 5/11/09 4 in Mathematics

2007-10-11 05:42:41 · 15 answers · asked by Anonymous in Chemistry

2007-10-11 05:39:35 · 2 answers · asked by Derek T 2 in Physics

2007-10-11 05:39:04 · 9 answers · asked by Anonymous in Astronomy & Space

2007-10-11 05:38:03 · 3 answers · asked by Leaf on the Wind 4 in Mathematics

PROBLEM # A: 1 = -2-(4-W)
W = -2-1-(4)
W = -2-1-4
W = -7
This is how I proved it:
1 = -2-(4-7)
1 = -2-(-3)
1 = -2+3
1 = 1

Here is the next one
PROBLEM B: 4-(1+X) = 5
4-1-X = 5
-X = 5-4+1
-X = 1+1
-X = 2
X = -2
This is how I proved it:
4-{(1+(-2)} = 5
4 - (1-2) = 5
4 - (-1) = 5
4 + 1 = 5
5 = 5

Please answer in following manner :
PROBLEM # A: Correct or Incorrect and Why?
PROBLEM # B: Correct or Incorrect and Why?

Also has anyone ever solved an Algebra problem quite this way?

(No Assumption Please!!!) Thanks for your time.

2007-10-11 05:37:50 · 8 answers · asked by GQ 2 in Mathematics

2007-10-11 05:34:07 · 3 answers · asked by Anonymous in Mathematics

-20a^3+15a+13a^2


thanks. I am stuck on this one!!

2007-10-11 05:29:36 · 5 answers · asked by Anonymous in Mathematics

What is the heat of combustion of 1 mol of C4H10 in kJ/mol, if 1.041 g is burned and a calorimeter absorbs +51.0 kJ of heat?

qrxn= -q calorimeter =
-51.0 kJ --> -51.0 kJ/ 1.041 g C4H10 X 58.0 g C4H10/ 1 mol of C4H10 = -2841 kJ/mol C4H10

Everything make sense execept for the 58.0 grams. Where does it come from and how can I calculate it? Thank you!

2007-10-11 05:27:17 · 6 answers · asked by Jamie 3 in Chemistry

2007-10-11 05:27:07 · 8 answers · asked by K-Dizzle 5 in Biology

2007-10-11 05:18:19 · 1 answers · asked by Jen 1 in Earth Sciences & Geology

What are the rational zeros of this polynomial and what is the factor with the zeros?

2007-10-11 05:17:58 · 2 answers · asked by Anonymous in Mathematics

(x^4 + 4x^3 + 5x^2 - 2x - 8) divided by (x + 2)

2007-10-11 05:15:27 · 2 answers · asked by Anonymous in Mathematics

im working on a worksheet and i dont understand any of these questions and they have to be eith "always, never, or sometimes" CAN YOU HELP!?

2007-10-11 05:13:35 · 7 answers · asked by ♪Distressing_You♪ 1 in Mathematics

When you push a 1.70 kg book resting on a tabletop it takes 2.40 N to start the book sliding. Once it is sliding, however, it takes only 1.50 N to keep the book moving with constant speed. What are the coefficients of static and kinetic friction between the book and the tabletop?

Static?

Kinetic?

If you can just tell me to go about how to solve the problem that would be fine. (Though answers are always welcome to.) I am drawing a complete blank.

2007-10-11 05:05:47 · 4 answers · asked by lstntht 1 in Physics

2007-10-11 05:00:56 · 5 answers · asked by archangel 1 in Mathematics

2007-10-11 04:59:52 · 2 answers · asked by Sanghamitra 1 in Chemistry

information on why butterflies are decreasing in numbers?

2007-10-11 04:57:32 · 1 answers · asked by fun_gamers97 1 in Zoology

2007-10-11 04:56:38 · 10 answers · asked by Anonymous in Astronomy & Space

And should you play if you are given even-money odds for payout?

You toss 5 coins.
Keep all the heads that show, and toss the remaining coins.
Again keep all the heads that show, and toss the remaining coins.

You win if after any toss all 5 coins are heads.

And if you're really ambitious:
In this version of the game you can toss up to 3 times.
What is the probability of winning if you're allowed to toss up to k times?

2007-10-11 04:54:48 · 3 answers · asked by oscarD 3 in Mathematics

i have a ti-89 calculator and for some reason when ever i try to solve a sin or cos or tan it wont solve it for example i enter "sin(1/2)" and instead of the answer it displays "sin(1/2)" what could be causing this...?

2007-10-11 04:52:12 · 2 answers · asked by Kevin N 1 in Mathematics