Science & Mathematics - 4 December 2006

I have a four digit combination lock I forgot the code to. It is four digits with no repating digits, ie. 1123, 4565, and 9878 are invalid. The order of the digits is not important. For example if the code is 1234. Other valid combination 2341, 4321, 1432 etc. will open the lock. How many possiable codes are there is there an easy way to generate a list?

2006-12-04 12:13:42 · 3 answers · asked by Gamer65 1 in Mathematics

an object with a mass is moving with a certain velocity

2006-12-04 12:12:28 · 5 answers · asked by foxy lady 2 in Physics

a 150kg football player has a velocity of 5m/s

2006-12-04 12:11:41 · 4 answers · asked by foxy lady 2 in Physics

how do i have the system:
x+2y=3
4x+2y=-6

2006-12-04 12:11:15 · 2 answers · asked by nisha10mabry 3 in Mathematics

if I got both answers right. I am not sure if the first division problem I wrote is 41.12 or 41.5 in base of six. I did do that chart where on one section I put the base ten numbers and on the other side of the chart I put the base of six numbers. Then on the second one I am not sure if my answer is correct I got 11.36 in base of six.

2006-12-04 12:10:01 · 1 answers · asked by Justapersonhere 1 in Mathematics

Can someone please help me set up this problem:

If you burned 6.10 *10^24 molecules of ethane (C2H6) what mass of ethane did you burn?

2006-12-04 12:05:47 · 2 answers · asked by Mia16 3 in Chemistry

or, did it?

2006-12-04 12:05:25 · 7 answers · asked by suka 1 in Physics

when 2.050 L of 0.0550 M BaCl2 (aq) and 2.020 L of 0.0429 M ZnSO4 (aq) are mixed.

2006-12-04 12:05:11 · 2 answers · asked by Amandy 1 in Chemistry

how do i solve the system:
-x+5y=15
2x+3y=9

2006-12-04 12:05:00 · 3 answers · asked by nisha10mabry 3 in Mathematics

.put the amount each planet has seperately first, then the total .plz!

2006-12-04 12:04:48 · 4 answers · asked by punkypenguinUSA 3 in Astronomy & Space

2006-12-04 12:03:54 · 11 answers · asked by hoosierdaddy47471 2 in Astronomy & Space

I have a four digit combination lock I forgot the code to. It is four digits with no repating digits, ie. 1123, 4565, and 9878 are invalid. How many possiable codes are there is there an easy way to generate a list?

2006-12-04 12:03:06 · 6 answers · asked by Gamer65 1 in Other - Science

I have a four digit combination lock I forgot the code to. It is four digits with no repating digits, ie. 1123, 4565, and 9878 are invalid. How many possiable codes are there is there an easy way to generate a list?

2006-12-04 12:01:54 · 5 answers · asked by Gamer65 1 in Mathematics

2006-12-04 12:01:52 · 5 answers · asked by queenb_b4u 1 in Physics

Find the derivative of the function F(x)= ln (8x^2 +6x + 7)

F^1(x)= 16x + 6 / 8x^2 + 6x +7

2006-12-04 12:00:07 · 2 answers · asked by savj14 2 in Mathematics

2006-12-04 11:59:56 · 5 answers · asked by Taylor M 1 in Geography

This is a serious question. My gf and I have been debating whether this is a natural behavior. Also from an evolutionary perspective why do humans do it?

2006-12-04 11:59:54 · 5 answers · asked by dtshaff 3 in Biology

What animal kingdom does a worm belong to? I've heard of the various kingdoms of living things such as mammal, insect, plant, and bacteria but I can't see where a worm belongs in.

2006-12-04 11:59:47 · 4 answers · asked by stelcha 2 in Zoology

1.) Solve for X.
3 ^3-5x = 24

2.) Solve for X.
3 ln (-2x + 4) = -3

2006-12-04 11:57:22 · 5 answers · asked by savj14 2 in Mathematics

this is for class, so no silly answers please.

2006-12-04 11:56:38 · 4 answers · asked by rst5566 2 in Physics

2006-12-04 11:56:36 · 5 answers · asked by Taylor M 1 in Geography

Features I need are:
1. Structural carbon steel construction for welded installation in 12-inch steel pipe.
2. One swivel axis, with at least one single row ball bearing with hardened steel tracks.
3. Sealing surfaces shall be stainless steel to protect against corrosion.
4. Seal replacement, ball replacement, and relubrication is possible without removing the swivel from the pipeline.

Does such a thing exist?

2006-12-04 11:55:35 · 2 answers · asked by lufen 3 in Engineering

2006-12-04 11:54:42 · 7 answers · asked by kit k 1 in Botany

2006-12-04 11:50:20 · 5 answers · asked by huzaifai 1 in Mathematics

it ends with an i and is 6 letters.

2006-12-04 11:50:04 · 9 answers · asked by Anonymous in Chemistry

Which one of the following is a covalent oxide?

Which one of the following is a covalent oxide?

a) BeO
b) MgO
c) K2O
d) Rb2O
e) CaO

2006-12-04 11:49:54 · 4 answers · asked by Erin C 1 in Chemistry

i need an idea for an invention

2006-12-04 11:49:44 · 17 answers · asked by Rebecca A 2 in Engineering

Which of the following hydrides is the most ionic?

a) LiH
b) NaH
c) CH4
d) NH3
e) RbH

2006-12-04 11:49:13 · 1 answers · asked by Erin C 1 in Chemistry

So the question is to evaluate the integral of (x+1)/(x(x^2+1)) dx

I broke up it into A/(x) + (Bx+C)/(x^2+1)

Did the whole shabang and got 1/2 ln(x^2+1) +arctanx + C but this was marked wrong on my test. Can someone tell me what the real answer is and if I broke up the partial fractions wrong. Oh and I got the values of A=0, B=1, C=1 when solving the linear equations.

THank you if you could help me find my mistake or tell me what the right answer would have been.

2006-12-04 11:48:55 · 3 answers · asked by Bender[OO] 3 in Mathematics

2006-12-04 11:48:43 · 3 answers · asked by Kelsey W 1 in Weather