Science & Mathematics - 26 January 2007

Which of the following are accepted without proof in a logical system? Check all that apply.

A. theorems
B. postulates
C. corollaries
D. conjectures

2007-01-26 05:57:06 · 6 answers · asked by Rattiesrule 2 in Mathematics

choices:

1/3 walts
1 walts
3 walts
48 walts

2007-01-26 05:55:32 · 5 answers · asked by Anonymous in Physics

2007-01-26 05:54:28 · 5 answers · asked by goring 6 in Astronomy & Space

PLease help me find out

2007-01-26 05:53:26 · 8 answers · asked by Anonymous in Biology

i need help with doing metrix
the problem is
1 -1 2 3
-1 0 1 -2
3 2 1 4
-1 -2 0 -3

2007-01-26 05:52:34 · 3 answers · asked by lubna h 1 in Mathematics

2007-01-26 05:49:52 · 2 answers · asked by goring 6 in Astronomy & Space

How does this translate into english?

Let p, q, and r be the following statements:
p: Roses are red
q: The sky is blue
r: The grass is green

( ~ r ^ ~ q) --> ~ p

2007-01-26 05:49:22 · 4 answers · asked by Anonymous in Mathematics

Calculate the theoretical amount of CaCl2 that would be required to change the remperature of 50ml of water from room temperature 20-45 degrees celcius

In order to do this calculation you'll need the heat capacity of water (4.184Jg-1deg-1) You can assume that the density of water is 1g/mL
This question is based on the thermochemistry of hot packs!

** Can you please explain step by step how to solve this problem and give the solution as well

thanks

2007-01-26 05:47:24 · 2 answers · asked by CC 2 in Chemistry

linked to their tax proposals. During this research, she requires a solution with a pH OF 12. What mass of the strong bass,Ba(OH)2,must she dissolve in 1.0L of water in order to obtain such a solution?

2007-01-26 05:46:34 · 2 answers · asked by redhotcutiegirl 1 in Other - Science

If you have a warm steel sphere approximately the size of a baseball and cause cool air to flow past it - at what velocity will the heat gained by air friction balance with the heat lost to "wind chill" so that the sphere's temperature remains constant?

2007-01-26 05:45:58 · 7 answers · asked by elycanoe 1 in Physics

2007-01-26 05:45:05 · 8 answers · asked by kseeker 2 in Biology

2007-01-26 05:44:58 · 8 answers · asked by goring 6 in Astronomy & Space

Phases of matter

2007-01-26 05:43:29 · 3 answers · asked by Anonymous in Chemistry

2007-01-26 05:43:14 · 12 answers · asked by Olivia 4 in Mathematics

2007-01-26 05:43:00 · 9 answers · asked by alvin1212 1 in Mathematics

I've learned in school about genetics and eye color with dominant and recessive genes, but the examples were always with brown and blue eyes.
So how does one get green eyes, or grey or violet for that matter? Are green eyes in terms of genetics the same as blue?

2007-01-26 05:41:59 · 38 answers · asked by Maria 4 in Biology

we live in alabama in the central eastern section and a sand dollar fossil we found and was wondering if it might be very old

2007-01-26 05:41:56 · 5 answers · asked by Donna C 4 in Earth Sciences & Geology

He said he saw a mom and several kittens/bunnies. He didn't call it a cabit, I heard that from someone else. Hesaid they were half cats and half rabbits. He said decades later he saw pictures of some found in Texas.

I know, technically, they aren't supposed to breed but horses and donkeys can breed. Maybe a same thing?

I am only looking for personal experience/belief.

2007-01-26 05:41:28 · 10 answers · asked by Anonymous in Zoology

2007-01-26 05:41:27 · 2 answers · asked by zebbie g 2 in Zoology

2007-01-26 05:40:48 · 4 answers · asked by zebbie g 2 in Zoology

2007-01-26 05:39:49 · 3 answers · asked by Brett J 1 in Earth Sciences & Geology

8/n=15/60

A.

a. 29

B.

32

C.

53

D.

480


18/1.5=x/4.5

A.

5.4

B.

8.1

C.

54

D.

81


30/x=10/24

A.

216

B.

720

C.

7.2

D.

72

2007-01-26 05:39:48 · 7 answers · asked by Anonymous in Mathematics

2007-01-26 05:39:13 · 7 answers · asked by bribaillie 1 in Geography

Nina cut 4 1/12 yards of fishing line from a new reel. How much is this in inches?
Metric Table:
1ft = 12in
1yd = 3ft

2007-01-26 05:38:31 · 12 answers · asked by tiffany_da_finest 1 in Mathematics

-3 ....... 4 ....... 5
___ + ___ + ___

7 ....... -3 ....... 6

2007-01-26 05:36:39 · 7 answers · asked by Olivia 4 in Mathematics

Both my husband and I have unusual eye colors
My husband has amber colored (yellow or cat eyes) eyes.
I have blue-green eyes.
What color eyes will our children have?

2007-01-26 05:36:21 · 9 answers · asked by Aimee B 6 in Biology

they said recently it is not a planet !! and what about UB313 ??

2007-01-26 05:35:17 · 11 answers · asked by PLUTO 6 in Astronomy & Space

Hi,

I was wondering how I would find the electric field strength inside a parallel-plate capacitor. I have been trying to find an equation, but seem to fall short. The electric field strength should be in units of V/m.

Thanks!

2007-01-26 05:35:15 · 3 answers · asked by Anonymous in Physics

integration [x*(e^2x)*dx]

2007-01-26 05:33:31 · 3 answers · asked by Anonymous in Mathematics

does the angle of the solar panel also contribute to the factor

2007-01-26 05:28:27 · 5 answers · asked by mardhiah a 1 in Physics