Science & Mathematics - 8 December 2006

2006-12-08 10:15:21 · 5 answers · asked by kjhglkhg 2 in Mathematics

a club has 100 members. How many different pairs of members could be chosen to be co-presidents? Explain please!

2006-12-08 10:13:49 · 7 answers · asked by kjhglkhg 2 in Mathematics

how many 3-digit counting numbers can be made using the digits 1,2,3,5,7, and 8?

a) with reptition?

b) without reptition?

2006-12-08 10:12:47 · 4 answers · asked by kjhglkhg 2 in Mathematics

How many two-letter combonations can be made using only the letters A,B,C, and D? Double letters are allowed. AB is not considered the same as BA. Explain please!

2006-12-08 10:11:11 · 7 answers · asked by kjhglkhg 2 in Mathematics

we have two oranges WITH PEELINGS ON.
Orange A is placed into a container of water.
Orange B is left on the counter, in the same room.

after one week has past, which orange will be juicier. A or B

Thanks so much.

2006-12-08 10:09:31 · 8 answers · asked by tattlelynn 1 in Botany

2006-12-08 10:07:33 · 8 answers · asked by bricyns 1 in Chemistry

2006-12-08 10:06:26 · 10 answers · asked by malibu1 1 in Medicine

its close to 1.4 but apparantly there is a way to get an exact anwer with radicals. could you show me how please?

2006-12-08 10:05:43 · 4 answers · asked by Anonymous in Mathematics

2006-12-08 10:04:32 · 3 answers · asked by breastfed43 3 in Biology

like what jobs may use this formula ?????

2006-12-08 10:03:53 · 6 answers · asked by Darius 1 in Mathematics

2006-12-08 10:02:45 · 5 answers · asked by Cody W 1 in Engineering

2006-12-08 10:00:18 · 3 answers · asked by lucky m 1 in Geography

The reason I ask is my wife is at the ER with lower back problems. I've had a vasectomy and I can't understand why they would still need to wait on a pregnancy test if we can't have children. Is this just a way to run up the bill orshould there be a suspicion of her cheating on me?

2006-12-08 09:57:48 · 11 answers · asked by William H 2 in Medicine

1) The products would include a new acid and a new base
2) The products would be an aquaeous salt and water
3) The reactants would both have a pH of 7
4) The products would have a pH of more than 7
5) The products would be magnesium oxide and hydrogen sulfide

Help is greatly appreciated!

2006-12-08 09:51:08 · 4 answers · asked by theweirdguy1 2 in Chemistry

Are the grooves in the brain like finger prints?

2006-12-08 09:51:05 · 5 answers · asked by Winter Wisdom 2 in Biology

Please could anybody Help me and find the answer to Q13 (a) and (b) and show their workings or how they got their answer?

2006-12-08 09:44:07 · 3 answers · asked by terminator_3000 1 in Mathematics

I'm doing my hw and i cannot solve a few problems about consectuive numbers and equations, but i cannot figure them out. I am not looking for answers to the questions; im looking for how to solve them. I know how to use vairables and such, and to solve for the variables, but i cannot figure out the proper equation. Can someone please tell me what i should do? Here are the questions:

1. The sum of four consecutive numbers exceeds the difference of five times the fourth term and three times the third term by twenty-seven.

2. A shipping company told its customer that the average weight of five boxes is thirty-three pounds. It knows that the weights of four of the boxes are 25 pounds, 30 pounds, 30 pounds, and 35 pounds. The shipper lost the information on the fifth box. Help him find out the weight of the fifth box.

3.The sum of four consecutive even numbers is twelve more than three times the third term. What are the four numbers?

Four number are added together. The second n

2006-12-08 09:42:11 · 10 answers · asked by jman146 2 in Mathematics

That would be so cool.

2006-12-08 09:41:04 · 10 answers · asked by Buster 3 in Physics

Sample A has a mean of 194 hours and a standard deviation of 10.67 hours.
Sample B has a mean of 204.0 hours and standard deviation 9.02 hours.

i) Show whether the data provides evidence that sample A are more variable than sample B.
ii) Show whether the data provides evidence that spark plugs sample B last longer on average than those from sample A.

2006-12-08 09:39:09 · 3 answers · asked by tycho1a 1 in Engineering

I mean if you look at the results it can look right through bone as if you sliced through a bone and are looking inside...it's pretty neet but I don't get how it works.

2006-12-08 09:36:23 · 4 answers · asked by Anonymous in Medicine

I was wondering where I might be able to get a decent bunsen burner for a good price. Or if there were actual stores that sell it. If anyone knows any stores in Bergen County, New Jersey that sell bunsen burners that would help.

2006-12-08 09:36:12 · 4 answers · asked by John C 2 in Chemistry

2006-12-08 09:29:09 · 4 answers · asked by zoomraker 1 in Engineering

function 9/5+x/5 when x0=1 approximate sqrt28

2006-12-08 09:27:24 · 3 answers · asked by kondiii 1 in Mathematics

2006-12-08 09:26:55 · 9 answers · asked by paco 1 in Mathematics

This is for a tower I am building for a contest. It must be made completely of wood, and I have to make a design for it. I am baseing it on skyscrapers. It must have a flatish top.

2006-12-08 09:24:41 · 7 answers · asked by Anonymous in Engineering

2006-12-08 09:23:37 · 11 answers · asked by julie t 5 in Biology

what animals if you can name them all live on the great barrier reef? and what is making the great barrier reef die?

2006-12-08 09:22:50 · 3 answers · asked by Tim 4 in Zoology

2006-12-08 09:22:41 · 3 answers · asked by stone 3 in Other - Science

Why stars like the sun can burn for billions of years, generating so much energy to illuminate everything in its system and more, without burning out?

2006-12-08 09:22:39 · 24 answers · asked by windtravelor 1 in Astronomy & Space

2006-12-08 09:22:01 · 9 answers · asked by soilikepink 1 in Chemistry