Science & Mathematics - 12 September 2007

how do you convert this from english to algebra please?
Step by step would be awesome =D

2007-09-12 09:47:39 · 6 answers · asked by Anonymous in Mathematics

This is a pre-algebra class from 7th grade.

2007-09-12 09:47:14 · 9 answers · asked by mayalazaravilla 1 in Mathematics

What is the chemical formula of the bonding of the following ions?

Ba^2+ ions and SO4^2- ions
p.s. it is not Ba(SO4)

Ag^1+ ions and CrO4^2- ions
p.s. it is not Ag2(CrO4)

2007-09-12 09:45:46 · 2 answers · asked by Anonymous in Chemistry

2007-09-12 09:42:01 · 7 answers · asked by 52rg 1 in Weather

In grade 11 I was told the formula was MnO4 with a charge of 2-. Now in grade 12 my new teacher says it is MnO3 with a charge of 1-...

I think personally that the first one is right because my new teacher seems pretty bad at following the rules and frequently puts "+2" rather than "2+" for ions in the superscript, and says it is good practice to put "+1" on ions like potassium rather than just "+".

Could someone please help me solve this predicament? :p

2007-09-12 09:41:29 · 8 answers · asked by Anonymous in Chemistry

2007-09-12 09:39:05 · 2 answers · asked by aby 1 in Biology

I have started a new website - www.hauntedsandhills.com to host my fledging paranormal investigative team. If anyone is willing to share their photos, stories, and/or experiences I would much appreciate it. I'm looking for material based in North Carolina, preferrably the Sanford, Fayetteville and coastal areas. But anything is welcome. I placed a similar query before, but placed it in the wrong section. Thanks in advance for anything you can contribute!

2007-09-12 09:37:25 · 3 answers · asked by HelpmeinNC 2 in Paranormal Phenomena

I will be obtaining a degree in civil engineering soon, and realized that everywhere I have co-oped at, I use Autocad alot, and the firms realize I am good at it (I have 7+ yrs of experience, 23yrs old) and that is all they ever have me do! I figure I may as well persue an autocad-related career, but is my engineering degree going to be overkill, and not compensated for?

2007-09-12 09:36:51 · 7 answers · asked by Anonymous in Engineering

2007-09-12 09:35:00 · 35 answers · asked by lea d 1 in Astronomy & Space

on my calculator when i try 3(-5)² i get 75.. when i try 3×-5² i get -75, this is really confusing me!! whats the difference?? arent they supposed to mean the same thing? when i square a negative integer will it be negative or postive??

2007-09-12 09:34:55 · 14 answers · asked by lbhsdpfhds 2 in Mathematics

How do I go about understanding how to do this.


1) -24-(-5)
2) 19-(-4)
3) -33-11
4) 14- 46
5) -200-50-(-10)

2007-09-12 09:34:54 · 1 answers · asked by Anonymous in Mathematics

2007-09-12 09:33:16 · 13 answers · asked by Brandon K 1 in Astronomy & Space

This was a multiple question so the answer has 2 b one of them!!!!

2007-09-12 09:32:42 · 3 answers · asked by Julie C 1 in Mathematics

I'm the founder of a fledging group in NC - www.hauntedsandhills.com and am wondering how best to get my groups name out. If anyone belongs to or has successfully started their own group I'd love to hear from you.

2007-09-12 09:31:58 · 8 answers · asked by HelpmeinNC 2 in Paranormal Phenomena

Since it formed out of countless collisions with tiny rocks in a more-or-less continuous fashion, there doesn't really seem to be a clear distinction between "not Earth yet" and "Earth". So what is being defined with that "date"? The rock having Earth's present mass? A regular orbit around the sun? A certain core temperature?
Thanks

2007-09-12 09:30:11 · 3 answers · asked by Anonymous in Earth Sciences & Geology

How do I factor this problem completely???

2007-09-12 09:29:33 · 6 answers · asked by Anonymous in Mathematics

V=4/3π r3 sovle for r

2007-09-12 09:29:30 · 1 answers · asked by Anonymous in Mathematics

2007-09-12 09:29:20 · 1 answers · asked by Anonymous in Mathematics

I was reading this news story at Yahoo.com:

http://news.yahoo.com/s/space/20070912/sc_space/bizarreparasiticstarfound

And I was wondering if scientists have found a way to detect things that are happening now (or fairly recently) in space. Isn't everything we observe in space millions of years old (like an old movie)? How do we really know what's happening now?

If an alien civilization out there somewhere looked at us, wouldn't they see the Earth (if they could see it) as it was millions of years ago?

2007-09-12 09:28:06 · 8 answers · asked by searching_please 6 in Astronomy & Space

Im nearly finished all my homework but im stuck on the remaining three. Please help!

1) Given that 3x-2y=4
find the value of Y when x= -2

2) Solve 3(x+1)= 4 - (x-3)

3) Solve
X/3 + 3x/4 - 2x-1/2= 1 (<==== these are in fractions)

please help!

2007-09-12 09:27:20 · 9 answers · asked by Anonymous in Mathematics

And if so how?

2007-09-12 09:26:33 · 5 answers · asked by Lindsay 3 in Earth Sciences & Geology

2HCL+2KMnO4+3H2c2o4----->6CO2+2MnO2+2KCL+4H2O

2007-09-12 09:26:25 · 1 answers · asked by stranger 1 in Chemistry

2007-09-12 09:25:38 · 9 answers · asked by Anonymous in Mathematics

Okay, here we go! I have NO IDEA how to solve this! Everything that I try yields the wrong answer!

(e^x + e^-x)/(e^x - e^-x) = 3

Please show me step-by-step how you're supposed to solve that! I'll pick a best answer TODAY! Thank you so much!

2007-09-12 09:24:31 · 8 answers · asked by Anonymous in Mathematics

2007-09-12 09:23:29 · 2 answers · asked by ahmed 1 in Zoology

Use the definition of the derivative to show how the formulas are obtained.

If f(x)=2X^2+X, then f'(x)= 4X+1

please help and also what do you think of my dress?

2007-09-12 09:19:30 · 5 answers · asked by fvsdf s 2 in Mathematics

2007-09-12 09:19:27 · 5 answers · asked by aohk17 2 in Mathematics

please help me i have a huuuuge test on it and know nothing about it so please help me!

2007-09-12 09:17:20 · 9 answers · asked by Anonymous in Astronomy & Space

In an isosceles right triangle, the length of the hypotenuse is 81. Find the length of each leg

2007-09-12 09:16:19 · 7 answers · asked by Anonymous in Mathematics

I was just wondering if G. H. Hardy's "A Course of Pure Mathematics" was considered good for learning real analysis. I don't think I've had the best calculus preparation I could have had at a university.

2007-09-12 09:16:01 · 5 answers · asked by Me 2 in Mathematics