Science & Mathematics - 15 December 2007

How do I find the zeros of f(x) = 2(x^3) + 6(x^2) - 4.5x - 13.5 WITHOUT using the calculator?

I attempted to use the possible rational zeros & synthetic division, but it's a bit complicated...

Step-by-step detailed instructions would be helpful :)

2007-12-15 13:10:27 · 3 answers · asked by =) 1 in Mathematics

Ammonium sulfate: Acid or base?

2007-12-15 13:07:02 · 5 answers · asked by Anonymous in Agriculture

are clay deposits ever found on the ocean floor, away from the mouths of rivers that might deposit such particles of matter?

Anybody care to estimate whether such clay might be suitable for crude ceramics/pottery...?

Does this have anything to do with turbidity currents?

Not clear? Let me know, I'll add more details.

Thanks!

16 DEC 07 0211 hrs, GMT.

2007-12-15 13:06:03 · 4 answers · asked by cdf-rom 7 in Earth Sciences & Geology

I'm just wondering what the average person thinks.
Just type in what you think. Thanks

2007-12-15 13:05:55 · 15 answers · asked by ryskaya 2 in Astronomy & Space

I am doing water rockets. I was going to put water in Rocket A, and put Milk in Rocket B, and see which one went higher.

I hypothisized that Water would go higher since it had a lower density.. but no I'm hearing that milk and water have similar densities.. so there wont be much of a difference in the heights of the rockets..

So which liquids should i choose to compare

Water vs ____

I wanna do a liquid with a high density -- no soda

2007-12-15 13:03:48 · 7 answers · asked by Anonymous in Engineering

i have a project to do and i cant answer this question. can you "guys" help me?

2007-12-15 13:03:14 · 3 answers · asked by Shanae :) 2 in Weather

how would u know which air at different locations has the greatest capacity to hold water vapor?
using the relative humidity?

for example:
1)Courtyard relative humidity 35.0
10) Outside front relative humidity 84.0

which air has the greatest capasity to hold water vapor? and how did u find it

2007-12-15 13:02:10 · 3 answers · asked by nonameforsure 2 in Weather

2007-12-15 13:01:28 · 7 answers · asked by Anonymous in Astronomy & Space

a) I don't think this is an identity but what it the easiest way to prove it. cos6y= 2cosˆ2(3y)-1

and 2sinxcosx=sin(-2x) is an identity?

2007-12-15 13:00:38 · 4 answers · asked by eklypze 2 in Mathematics

The circle whose equation is x^2 + 2x + y^2 + 6y + 6 = 0
has center (1,3) and radius 2
has center (-1, -3) and radius 2
has center (-1, -3) and radius 4
has center (1, 3) and radius 4


The circle whose equation is x^2 - 6x + y^2 + 2y = -4
has center (-3,1) and radius sqrt(6)
has center (3,-1) and radius sqrt(6)
has center (3,-1) and radius 6
has center (-1,3) and radius sqrt(6)


COULD YOU ALSO SHARE HOW YOU GOT YOUR ANSWER! I am having a lot of difficulty with this

2007-12-15 12:59:11 · 2 answers · asked by Anonymous in Mathematics

(2. how does the pressure of blood in the arteries affect the flow of blood from the heart to the tissues?


10points is yours.

2007-12-15 12:57:00 · 2 answers · asked by Anonymous in Biology

It is a question from algebraic identities.

2007-12-15 12:55:04 · 10 answers · asked by Anonymous in Mathematics

2007-12-15 12:53:33 · 3 answers · asked by mpuller44 1 in Physics

2007-12-15 12:51:11 · 5 answers · asked by Linda 1 in Chemistry

solve the system if equations by using the elimination-by-addition method

5x + 2y = -4
5x - 3y = 6

2007-12-15 12:50:51 · 3 answers · asked by CBrizz8807 1 in Mathematics

2007-12-15 12:47:34 · 3 answers · asked by cutie456768 1 in Weather

HELPPP

2007-12-15 12:46:17 · 3 answers · asked by Mr. Computer 1 in Mathematics

similarites and differences between diffusion and facilitated diffusion

2007-12-15 12:46:09 · 1 answers · asked by Anonymous in Chemistry

i heard of if you drop a penny off a building it can kill someone...but what about a muffin????...haha just a random question

2007-12-15 12:44:06 · 26 answers · asked by jayme 2 in Astronomy & Space

2007-12-15 12:43:11 · 4 answers · asked by future 1 in Biology

2007-12-15 12:43:07 · 0 answers · asked by zjraheem 1 in Mathematics

Where you can name a star whatever you want, is this true? If so it would be really cool

2007-12-15 12:42:57 · 5 answers · asked by Anonymous in Astronomy & Space

2007-12-15 12:42:32 · 3 answers · asked by ayah_rock_star 1 in Mathematics

human embryos. which one would you save if you had time to save one? what is the morally correct decision and why?

2007-12-15 12:42:01 · 5 answers · asked by stephanie 1 in Biology

my original question I thought was answered, but I just don't know now. My original situation began at home in my room where my grandfather died 3 years ago in his bed. I thought the strange whispers and me feeling sick, someone touching my legs while i was trying to sleep,my shampoo bottle jumping off of the shelf yesterday was due to him, but others told me otherwise. They said it was my own energy or the energy of a negative entity. Last night I left my house and went to a friends house. It seems the energy has followed me. My friends computer turns off and on. The lights in his house dim off and on. I hear sounds like two wolves fighting. I still hear whispering and get headaches. Just a minute ago my dog started barking at my wall, which really freaked me out and made me want to ask this question. I'm not a satan worshiper, I do no drugs, and have not allowed a negitive entity into my life. what do I need to do? I am going to go insane. plz help.

2007-12-15 12:41:39 · 35 answers · asked by hyena 1 in Paranormal Phenomena

given the speed of light as 3.0 x 10 ^8 m/s, calculate the wavelength of the electromagnetic radiation whose frequency is 7.500 x 10 ^12 Hz.
Please explain how to figure this out!
thanks in advance!

2007-12-15 12:41:03 · 3 answers · asked by hi 3 in Chemistry

Solve the following system of equations by using substitution method

y= -3x-18
5x-2= -8

2007-12-15 12:39:49 · 21 answers · asked by CBrizz8807 1 in Mathematics

i was putting the ice in a cup filled with water and a seond later dew started to form.
Where does the water come from that appears on the cup? and what caused it?

2007-12-15 12:38:58 · 2 answers · asked by nonameforsure 2 in Weather

2007-12-15 12:38:53 · 10 answers · asked by eventhorizon 2 in Astronomy & Space

If an original sample of ruthenium-106 had a mass of 128 mg, and there are 2 mg left, what is the elapsed time?

2007-12-15 12:37:07 · 3 answers · asked by Anonymous in Mathematics