Science & Mathematics - 29 November 2006

1.) ax-by+ay-bx
2.) x^18 - y^6
3.) 6x^2 + 53x +40
4.) x^2 - 16x + 63

2006-11-29 11:21:52 · 3 answers · asked by SICK MY DUCK! 1 in Mathematics

My daughter has a school problem and we are not sure if the tail and dorsal fin count as fins along with the two side fins.

2006-11-29 11:20:07 · 6 answers · asked by aggie brown 1 in Zoology

Marie is sending some paperback books to her cousin. EAch book weighs 4 oz. She is mailing them in a box that weighs 6 oz. Write an equation to describe the situation and tell what the variable represent.

2006-11-29 11:18:12 · 14 answers · asked by Deb C 1 in Mathematics

Please try and find this for me beacuse i have looked about every thought i could find these answers.

2006-11-29 11:18:08 · 2 answers · asked by Anonymous in Earth Sciences & Geology

The y-intercept point of f(x) = 2x^2 +6x -56 is (0, -56). Right?

2006-11-29 11:17:04 · 6 answers · asked by Anonymous in Mathematics

I live in columbia mo.

2006-11-29 11:16:37 · 5 answers · asked by NIGHTSHADE 4 in Weather

Pythagoras's Theorem states that if a and b are the shorter lengths of a right angled triangle, the length of the longer side, c, is such that a^2 + b^2 = c^2.

There are plenty of Pythagorian triples. That is, non-zero whole numbers (integers) a and b such that c is itself a whole number. Examples include (3, 4, 5) and (5, 12, 13).

My question is that if instead of squaring, we raise the number to a higher power, are there any more triples. Eg. is there a non-trivial solution to a^3 + b^3 = c^3 or a^4 + b^4 = c^4? One example would be fine.

Otherwise, does anyone have a short proof in the unlikely situation that there is no solution?

2006-11-29 11:16:26 · 3 answers · asked by Morosoph 2 in Mathematics

2006-11-29 11:15:45 · 3 answers · asked by Monica Jyll . 1 in Biology

i hate science

2006-11-29 11:15:10 · 3 answers · asked by jen kutcher 2 in Medicine

Where can I get ammonium nitrate for school and is a licence or ID required to buy it?

2006-11-29 11:14:55 · 3 answers · asked by Sliceathroat 3 in Chemistry

x/x+4 is less than or equal to 3x

2006-11-29 11:14:48 · 4 answers · asked by poohntao 2 in Mathematics

2006-11-29 11:12:29 · 1 answers · asked by Anonymous in Geography

In the back of my book we have extra problems we can do, to work prepart ourselves for the test. It gives answers, but no explanations. There were a few I didn't understand, so my chem teacher was supposed to help me during lunch. He was absent today (we have a block schedule, so we'll still have the test)! Anyway, I need help solving these equations. Any help would be great!

1) The concentration of a H2O2 solution can by determine by titration against a standardized potassium permanganate solution in an acidic medium according to the following equation:
2MnO4- + 5H2O2 + 6H+ --> 5O2 + 2Mn2+ + 8H2O
If 36.44mL of a 0.01625M KMnO4 solution are required to completely oxidize 25.00mL of a H2O2 solution, calculate the molarity of the H2O2 solution.

2) H2C2O4 is present in many plants and vegetables. If 24.0mL of 0.0100 M KMnO2 solution is needed to titrate 1.00g of a sample of H2C2O4 to the equivalence point, what is the percent mass of H2C2O4 in the sample?

2006-11-29 11:11:24 · 2 answers · asked by countrygurl587 3 in Chemistry

Help please?

2006-11-29 11:10:17 · 17 answers · asked by Sandy 4 in Mathematics

2006-11-29 11:10:00 · 8 answers · asked by STORMY K 3 in Biology

can someone help me with balancing equations? i don't get how to do it at all, and i need help.

2006-11-29 11:09:18 · 5 answers · asked by Anonymous in Chemistry

2006-11-29 11:08:55 · 1 answers · asked by James S 1 in Engineering

2006-11-29 11:07:58 · 9 answers · asked by the knower 1 in Medicine

2006-11-29 11:07:25 · 6 answers · asked by *~ -ME- ~* 1 in Weather

Answer These Below Pleasee

8/9x 3/5 1/6x4/9 5 1/2 Divided By 5/6 7/9 divied by 3/4 3 1/3x5 1/5 8 3/5 divided by 2 3/4 9 7/8 x 10 1/2 18 3/4 didived by 5 /18 .......... Please Help Me Quickly!

2006-11-29 11:05:54 · 5 answers · asked by deb10 2 in Mathematics

Please show your work (without decimals). Thank you!

2006-11-29 11:05:53 · 2 answers · asked by Chelsey 5 in Mathematics

If I was stranded in the wild, would I be better off doing a snow cave, or digging a hole in the ground? Can ice get colder? Does it have a specific minimum temperature? whereas dirt can get indefinitely colder?

2006-11-29 11:05:08 · 3 answers · asked by Trent 2 in Weather

Which metal is the cathode?
Al
Ni

2006-11-29 11:04:51 · 1 answers · asked by diana t 1 in Chemistry

2006-11-29 11:04:35 · 3 answers · asked by tabachingching39 1 in Chemistry

-x/6=9
1/9=-2/7
-2/5y=4/15
5/7x=10/14
2.7y=54
-3.3y=6.6

2006-11-29 11:04:31 · 3 answers · asked by Anonymous in Mathematics

I have always wondered how they get cranes off the top of huge buildings when they finish building them.

I have had many people tell me how they THINK the cranes are taken off. But I want to know for sure. Can anyone give me some evidence? A web site or something??

When I say big building I mean like 100 storeys.

I have been told things ranging from

"a helicopter takes them off"

To

"They build tracks down the side of the building and drive it down"

And

"They pull it to pieces and take it down the elevator".

These MAY be real but sound like wild guesses to me.

So does anyone know the answer?

2006-11-29 11:02:37 · 3 answers · asked by danthebullionman 1 in Engineering

2006-11-29 11:00:34 · 3 answers · asked by metaldome 1 in Astronomy & Space

Cell potential
Calculate the standard cell potential given the following standard reduction potentials
Al^3+ +3e^- === Al; E^= -1.66V
Ag^+ +e^-=== Ag; E^= +0.799V looking for E^ cel
solve in V

2006-11-29 10:59:48 · 1 answers · asked by diana t 1 in Chemistry

Where were they found and how far do they date back?

2006-11-29 10:58:16 · 2 answers · asked by Anonymous in Earth Sciences & Geology

2006-11-29 10:57:04 · 5 answers · asked by ? 1 in Astronomy & Space