Science & Mathematics - 27 August 2007

y - 2 = -2x
3y - 2 = -6x

how do i solve this ?

2007-08-27 11:19:56 · 3 answers · asked by Anonymous in Mathematics

2007-08-27 11:19:22 · 6 answers · asked by Anonymous in Weather

C is the midpoint of AB, D is the midpoint of AC, E is the midpoint of AD, F is the midpoint of ED, G is the midpoint of EF, and H is the midpoint of DB. If DC = 16, find GH

2007-08-27 11:14:21 · 9 answers · asked by iluvcaliii06 2 in Mathematics

thanks

2007-08-27 11:12:19 · 1 answers · asked by Katrin 1 in Chemistry

what happens when you drop vinegar into milk

2007-08-27 11:10:14 · 2 answers · asked by CaRoLiNe 3 in Chemistry

explain how you know???

2007-08-27 11:09:52 · 4 answers · asked by sweetlilme17 2 in Chemistry

I have a question about battery consumption.Let say my battery has voltage of 6V and capacity of 11 mAh. It has to power up the circuit consists of microcontroller (5V, 50 mA), bluetooth module(3V, 20 mA), gyroscope(3V,10 mA). How to calculate the power consumption of the circuit.And how long the battery can last long to power up the circuit.Can it be longer than 5 hours? If not what can I do? I dont want to use external power supply and 11 mAh battery is the maximum energy capacity that I can have.

2007-08-27 11:09:29 · 3 answers · asked by Ikmal 1 in Engineering

to line up?

Please answer soon, if you know.

2007-08-27 11:08:34 · 1 answers · asked by Anonymous in Mathematics

what are the limits of....

a) lim ((SQRT(x^2 +x)) -x)
x->inf

b) lim (x*sinx)/(x^2 +5)
x->inf

2007-08-27 11:04:18 · 4 answers · asked by quizzie 1 in Mathematics

A compound contains only carbon, hydrogen, nitrogen, and oxygen. Combustion of 0.157 g of the compound produced 0.213 g CO2 and 0.0310 g H2O. In another experiment, it is found that 0.103 g of the compound produces 0.0230 g NH3. What is the empirical formula of the compound? Hint: Combustion involves reacting with excess O2. Assume that all the carbon ends up in CO2 and all the hydrogen ends up in H2O. Also assume that all the nitrogen ends up in the NH3 in the second experiment.

I know the answer, C7H5N3O6, but i don't know how to find it. help, please?

2007-08-27 11:04:07 · 2 answers · asked by Megan 1 in Chemistry

16) Fe2O3 + H2 ----> Fe +H2O
17) PbO2 + CO ----> Pb + CO2
18) Al + Fe2O3 ----> Fe + Al2O3
19) Fe3O4 + C ----> Fe + CO2
20) H20 + Co ----> H2 + CO2

can anyone help solve balancing these equations, i'm really confused. Very apreciated :D

2007-08-27 11:03:23 · 3 answers · asked by **Lilyanne** 3 in Chemistry

i heard that today mars is gonig to b almost as big as the moon and that u will b able to c it with the naked eye but for today only
is this true or a myth

2007-08-27 11:03:20 · 9 answers · asked by brandon catchings 1 in Astronomy & Space

What is the difference between these two sets:

{x:-4
{x|-4
What is the difference between the : and the |?

Thanks ;)

2007-08-27 11:01:29 · 3 answers · asked by Anonymous in Mathematics

Suppliers of L A Crosse wireless weather station with barometer

2007-08-27 10:58:03 · 2 answers · asked by real2turn 1 in Weather

you have just agreed to rent a villa in *** for the next 4 years. Rent for the villa is fixed at AED 211080 at the start of each year. If you want, you can make one payment of AED 761891 now to cover the rent for all 4 years.

If the opportunity cost of money is 7% compounded annually, how much will you save by paying the rent in one payment now?

the correct answer is: 3127.09

how to get it??? ><

2007-08-27 10:56:02 · 1 answers · asked by Yuuji 1 in Mathematics

how do these points form an isosceles triangle (1, -3) (3,2) (-2,4)

2007-08-27 10:52:10 · 3 answers · asked by josh h 3 in Mathematics

okay i have to do science fair but my topic was too childish.

i was gonna do my project on if the type and hardness of bread affects the rate atwhich it molds.

however this topic is too easy and i need another one how can i expand on this topic or can u think of a similar one?

2007-08-27 10:49:54 · 3 answers · asked by surfergeorge1321 3 in Other - Science

325 kg
0.00046
7104
0.0028


------------------------------------------------

find the number of signigicant digits in each of the following

0.00326
39010
77900.1
1.5300

2007-08-27 10:47:12 · 2 answers · asked by Anonymous in Chemistry

C6H12O6------->CO2 +H2O

2007-08-27 10:46:37 · 4 answers · asked by Nikki C 1 in Chemistry

When is the best time to view the eclipse.
I live in Austin Tx.
URL link for a web page containing the information would be nice too.

2007-08-27 10:46:28 · 3 answers · asked by Mercury 2010 7 in Astronomy & Space

why do soo man ppl like math? i think its soo boring and hard

2007-08-27 10:46:07 · 11 answers · asked by ~*mia*~ 3 in Mathematics

Please don't answer this if you have nothing but a smart comment to contribute. We all have our beliefs about the world so let's agree to disagree. For the rest of you, specifically I would like information dealing with deliberately having, focusing and sustaining visions. I occasionally will have something happen to me that is similar to a minute or so of a movie playing in my head, picture and sound. It happens when I am relaxed and not expecting it, and there is a distinct feeling of seeing through someone else's eyes. The images are also misty or transparent. I have been having dreams that contain conversations or events that later happen throughout my life, but the visions have just started in recent months. Any information, whether it be a good website, techniques from personal experience, or a book recommendation would be truly appreciated.

2007-08-27 10:45:40 · 22 answers · asked by Cat Loves Her Sabres 6 in Parapsychology

i need to solve each equation to find my solution

2007-08-27 10:40:31 · 8 answers · asked by scarlett williams1 1 in Mathematics

I know this is totally dumb, but I have totally forgot fractions.
Would someone please help me?
I need to minus -1/3 from 9.
1/3 - 9=?

2007-08-27 10:39:49 · 3 answers · asked by lifeiscake 3 in Mathematics

2007-08-27 10:39:26 · 1 answers · asked by ? 1 in Biology

1. find the zeros of y= 2x^3 - x

2. find th range of y= 3^x

3. find the domain of y= (x^2 +1)/ (x^2 - x - 6)

4. [ -9.998 ] = ?

2007-08-27 10:39:23 · 2 answers · asked by D.Bass 2 in Mathematics

2007-08-27 10:39:03 · 10 answers · asked by Momoffour 1 in Geography

Leaf insects are very hard to find information about!

2007-08-27 10:37:41 · 2 answers · asked by Anonymous in Botany

Such as time travel to the past, fountain of youth and a anti-gravity machine

2007-08-27 10:37:24 · 2 answers · asked by south of france 4 in Other - Science

y^2-24y+144=0

its (y-12)(y-12) right?

but now what do i do to get the value(s) of y ?

2007-08-27 10:36:54 · 7 answers · asked by Anna 3 in Mathematics