Science & Mathematics - 18 September 2007

Here's what I've done so far:
(u-3)^3-3u+8=0
(u-3)(u2-3u+9)-3u+8=0
u3-3u2+9u+92-3u2=27=3u+8=o
u3-9u2+18u-19=0...

but I don't know how to continue on now...

Thanks all in advance =D

2007-09-18 17:28:31 · 2 answers · asked by Anonymous in Mathematics

Would it be painful?

2007-09-18 17:28:27 · 4 answers · asked by Marmalade 2 in Medicine

http://i11.photobucket.com/albums/a168/Unf187/DSC02002.jpg

2007-09-18 17:27:31 · 12 answers · asked by Anonymous in Zoology

4x-24 x^2 - 9
--------------------x--------------------
x^2 - 18x +81 6-x

2007-09-18 17:27:27 · 2 answers · asked by Anonymous in Mathematics

If iodine is not present a human's diet, the thyroid gland condition called goiter develops. Iodized salt is designed to remedy this condition by providing some calcium iodate as an iodine source in normal table salt. How many atoms of iodine are provided by a 25 mg sample of table salt that contains 0.01% Ca(IO3)2

My answer came out to be 7.7e17 atoms I

2007-09-18 17:26:55 · 2 answers · asked by Anonymous in Chemistry

2007-09-18 17:26:44 · 3 answers · asked by alyssa boo 1 in Biology

2007-09-18 17:22:23 · 3 answers · asked by Anonymous in Earth Sciences & Geology

solve the equation x+5=8

2007-09-18 17:20:52 · 10 answers · asked by la la 1 in Mathematics

Please explain the effect temperature has on the rate of fermentation

2007-09-18 17:20:30 · 3 answers · asked by jabs0125 2 in Biology

The question is:

x^4-21x^2-100=0;-2i

Does anyone understand this? Because I certainly don't...

Thanks for your help!

2007-09-18 17:19:26 · 5 answers · asked by Kittey 2 in Mathematics

tiana says that you need to use an increase operation to solve y=8+21 tess disagrees
who is correct and why?

2007-09-18 17:18:07 · 4 answers · asked by la la 1 in Mathematics

2007-09-18 17:15:44 · 9 answers · asked by Pati A 1 in Mathematics

Any good websites to refreshen my memory? i forgot to do equations and such... why is it that i have a hard time remember math stuff? I remember something today and in a few days i forgot...

2007-09-18 17:14:00 · 8 answers · asked by Anonymous in Mathematics

Hey guys,
I am in Math 12 and I need some help with my review on transformations. Please help if you can.

If the graph x^2 + y^2 = 4 is vertically compressed by a factor of 1/5, then reflected in the y-axis, determine an equation for the graph.

2007-09-18 17:11:31 · 3 answers · asked by Anonymous in Mathematics

Please help me. This is part of my research subject in our school.

2007-09-18 17:08:24 · 4 answers · asked by lizbelle 1 in Medicine

2007-09-18 17:05:40 · 1 answers · asked by Anonymous in Earth Sciences & Geology

Definition of a continuous function:

a) f(c) is defined

b) lim f(x), x-> c exists

c) lim f(x)= f(c) x->c

If conditions b and c hold true, is a automatically true?

2007-09-18 17:03:59 · 2 answers · asked by puma1165 1 in Mathematics

Some schools don't have it like USC, UCLA.

2007-09-18 17:00:43 · 3 answers · asked by Venia c 1 in Mathematics

the question::
Which of the following compounds will react with eachother to form of a precipitate(determine all possible combinations)-Calcium carbonate, aluminum sulfate, barium nitrate, ammonium hydroxide, magnesium acetate

my answers::
CaCO3(aq) + 2NH4OH(aq)--> Ca(OH)2(s) + (NH4)2CO3(aq)
CaCO3 + Ba(NO3)2--> Ca(NO3)2+ BaCO3
CaCO3 + Mg(C2H3O2)2-->Ca(C2H3O2)2
+ MgCO3
3CaCO3 + Al2(SO4)3 -->3CaSO4+ Al2(CO3)
Al2(SO4)+6NH4OH-->2Al(OH)
3 +3(NH4)2SO4

and so on and so forth (im not going to bore you with all these letter/numbers)
i got a total of 10combinations because basically i used all of them
i was wondering if you can tell me if that is right/if im balancing the equations right

also, im having a bit of trouble with labeling the state (aq), (s)
[btw, the states i did for the first one are like that for the rest...at least i think so]
please help with some reassurance/corrections of my work, thanks

2007-09-18 16:51:14 · 2 answers · asked by *mouse* 3 in Chemistry

Problem 1:

(x) over (x + 5) - (3X) over (x +2) is equal to (4) over (x^2 + 7x + 10)

** I know that I need to use the quadratic formula at the end there -- that's where I'm getting stuck.

Problem two:

(4) over (x - 1) is equal to (X) over (x + 2) - (6) over (x^2 + x - 2)

2007-09-18 16:50:38 · 2 answers · asked by Anonymous in Mathematics

2007-09-18 16:49:00 · 9 answers · asked by me h 1 in Astronomy & Space

how do you make a table of values for this absolute valued function? I don't get it. please help

f(x) = |x-3|

2007-09-18 16:48:09 · 4 answers · asked by Anonymous in Mathematics

2007-09-18 16:46:59 · 6 answers · asked by Nicholas 1 in Biology

2007-09-18 16:46:52 · 12 answers · asked by Anonymous in Zoology

My friend is stuck on a math question. You have to factor two numbers and turn it into 4 numbers (I got stuck cause it made no sense to me). So like, you have to factor a polynomial and make it into 4 numbers into one (no brackets... would it be called a quadromial? I don't think it would be...)
So you have 3x2 - 75
3x2=3 squared

We think it has to do with the greatest common factor (which would be 3).

Any idea? (if you get it and can get an answer, can you show the work?)

I know there isn't much info but that's all I can explain cause it's on a sheet with a pile of other answers and the answers each have a word and when you put it into a spot on the sheet it'll make a (logical) sentence...

2007-09-18 16:46:18 · 3 answers · asked by Michelle 3 in Mathematics

A mountain climber, in the process of crossing between two cliffs by a rope, pauses to rest. She weighs 590 N. As the drawing shows, she is closer to the left cliff than to the right cliff, with the result that the tensions in the left and right sides of the rope are not the same. Find the tensions in the rope to the left and to the right of the mountain climber.

2007-09-18 16:45:05 · 1 answers · asked by Lisa B 1 in Physics

and is there a function defined on an interval [a,b] that is oscillatory?

2007-09-18 16:45:01 · 2 answers · asked by earsanddrums 1 in Mathematics

how do you make a table of value for this greatest integer function: h(x) = [[x]] + 2

please explain thoroughly. thank you very very much

2007-09-18 16:42:14 · 1 answers · asked by Anonymous in Mathematics

What are the identities of the individual compounds in a mixture of two organic chemicals?

2007-09-18 16:41:52 · 6 answers · asked by dustin d 3 in Chemistry

I was wondering is it possible to say that sqrt ( sine squared x) is sine. Or can say (sin^2(x))^1/2=sin(x )is that possible?

2007-09-18 16:39:05 · 2 answers · asked by Anonymous in Mathematics