Science & Mathematics - 28 August 2006

Use the digit "4" four times along with the following operations: subtraction (-), addition (+), multiplication (*), and division (/) to result in the answer 10. You may use parenthesis to control the order of operations.

For example, if you were solving for 3, you could use ( 4 + 4 + 4 ) / 4 because 12 divided by 4 is 3.

Or, if you feel there is no solution, provide a proof.

No, this isn't my homework. This is my friend's kid's homework and having accomplished a Math minor I feel I should have been able to solve his junior high homework!

2006-08-28 07:46:13 · 13 answers · asked by FreshMeat 2 in Mathematics

2006-08-28 07:45:27 · 3 answers · asked by delicateflower_us 1 in Engineering

2006-08-28 07:45:20 · 7 answers · asked by Anonymous in Other - Science

We all know DNA and RNA are self replicating molecules that encode genetic information in the sequence of bases. Hence their status as the "basic molecules of life".

So, what other (synthetic) self-replicating molecules exist that would be capable of encoding a specific sequence of momomeric units? Have any ever been synthesised?

Could any be the basis of life on planets with a different chemistry, or are aliens all going to be (boringly) based on nucleic acids?

2006-08-28 07:43:51 · 10 answers · asked by Anonymous in Chemistry

2006-08-28 07:43:28 · 5 answers · asked by Daybreak101 1 in Mathematics

2006-08-28 07:40:00 · 5 answers · asked by chestrocks9 1 in Weather

Big round white cap, tan center on top of cap, has a white ring, stem is maybe inch in width with a tan glimmer, has gills with a greenish tint. Edible?

2006-08-28 07:38:07 · 5 answers · asked by Anonymous in Botany

just want to know the exact number

2006-08-28 07:37:52 · 11 answers · asked by Anonymous in Astronomy & Space

Can I get a prescription for Valium as a sleep aid? I have terrible insomnia.

2006-08-28 07:37:42 · 6 answers · asked by deansheena 1 in Medicine

2006-08-28 07:37:23 · 5 answers · asked by cpotuna 3 in Engineering

I'm an AS level student,and lately I've come under a lot of pressure from my parents over the choice of my subjects as I despise physics, but my parents are convinced I won't make it thru without this subject into Medical college if I wanted to. are they right?Physics has been tormenting me for the past 2 years of O Levels and I don't want to feel like the dumbest person in class while I do vector calculations. And are there any other(or better) career options I can have other than becoming a doctor by having AS/A2 level Biology, Math and Chemistry. Also it would help me if someone gave me advice on university requirements as well.

2006-08-28 07:34:45 · 7 answers · asked by Sadia S 1 in Medicine

I have a really bad back and am constantly in pain. Does anyone have any suggestions on some pain killers to ask my dr about? I've heard that Lortab and Soma work very well together.

2006-08-28 07:33:48 · 19 answers · asked by deansheena 1 in Medicine

2006-08-28 07:33:37 · 2 answers · asked by nanda g 1 in Mathematics

2006-08-28 07:33:23 · 13 answers · asked by goring 6 in Physics

Arrange the following in the order of which animal you think can the strongest bite force in pounds to the lowest.....

Lion
Dog
Hyena
Wild Dog
Crocodile
The Giant Turtle
Great White Shark
Tiger

2006-08-28 07:29:46 · 12 answers · asked by Rock D 2 in Zoology

2006-08-28 07:25:48 · 8 answers · asked by Hobby 5 in Astronomy & Space

I'm confused; will two objects which are of different masses fall and hit the ground at the same time, always?

So, any objects which fall from the same height will hit the ground at the same time?

2006-08-28 07:24:03 · 28 answers · asked by babychi 4 in Physics

2006-08-28 07:23:43 · 9 answers · asked by Anonymous in Chemistry

On that note I am trying to explain to my husband the theory of dark matter with out using calculus and can't quite get the concept across to him. Any suggestions

2006-08-28 07:23:16 · 8 answers · asked by Mae 2 in Astronomy & Space

2006-08-28 07:17:39 · 14 answers · asked by Anonymous in Zoology

2006-08-28 07:14:39 · 28 answers · asked by CKRT SQRL 5 in Biology

2006-08-28 07:14:24 · 6 answers · asked by meg . 1 in Biology

2006-08-28 07:12:47 · 12 answers · asked by Anonymous in Chemistry

What are the 5 most polluted states in the country?Of those states Which are the 3 most polluted counties? I am not a student.This is research. Thanks

2006-08-28 07:12:41 · 3 answers · asked by thirsty mind 6 in Earth Sciences & Geology

I have had experienced contact with aliens. Who could I contact? Besides area 51, are there any other known agencies like SETI? Out of curiosity, do you believe right now living aliens of any form could be living among us, dealing with governments and people, studying and communicating with us right now? If so, how long do you think they have been here? Do you think they came after the first radio signal left Earth?

2006-08-28 07:07:39 · 12 answers · asked by Anonymous in Astronomy & Space

This is not a question ..

Thought this might be interesting to post for the Pluto debaters ..

another important factor to consider is before it was discovered by clyde Tombaugh and labeled a
planet .. it used to be a moon of neptune, broke away from it's gravity & then got caught in the sun's
gravity & orbited around that . It used to be that a planet was clasified as orbiting any star . Now it's the make up and size of a planet .

2006-08-28 06:57:38 · 5 answers · asked by spaceprt 5 in Astronomy & Space

How could it be done?

2006-08-28 06:56:53 · 25 answers · asked by ? 5 in Physics

a) snow flake
b) salt crystal in salt mine
c) sugar
d) quartz grain in granite

2006-08-28 06:54:48 · 12 answers · asked by christianjameling 1 in Earth Sciences & Geology

2006-08-28 06:54:45 · 4 answers · asked by desdemona 1 in Chemistry

We only see things because of light....Does our solar system contains other things that we cannot see( does not reflect light or light pass through them)....An example is the blackhole and the super massive blackhole at the center of the milky way...Or is it that other living forms exists but we can't see them and they neither....

2006-08-28 06:52:13 · 10 answers · asked by deviljin_svs 1 in Earth Sciences & Geology