Science & Mathematics - 11 October 2006

1.5(2-x)+7x= -3 (x+5)
2. 2/3 (18x-12) = 7-3(x-3)
good luck
=]

2006-10-11 16:17:18 · 4 answers · asked by NABEELiOS 1 in Mathematics

Multiply these fractions 2x^2 - x - 3 over 3x^2+7x+4 times 3x^2-11x-20 over 4x^2 - 9

Can someone show me how to do this?

2006-10-11 16:10:45 · 4 answers · asked by George F 1 in Mathematics

Are piezoelectric sensors for accelerometers expensive and whether biometrics possible for teeth recognition.

Thanks,

and oh yes..it's tons of fun.

2006-10-11 16:10:04 · 3 answers · asked by Ilooklikemyavatar..exactly 3 in Other - Science

1. 25 g of NaCl?


2. 125 g of H2SO4

2006-10-11 16:08:26 · 2 answers · asked by Alyssia S 1 in Chemistry

how does this fact explain why methanol dissolves in water but metha

2006-10-11 16:07:53 · 2 answers · asked by DK 2 in Biology

2006-10-11 16:06:16 · 3 answers · asked by KT V 2 in Mathematics

the sum of 3 numbers is 301. the second number is 3 less than twelve times the first number. the third number is 4 more than seven times the first number. find the three numbers
good luck!
=]

2006-10-11 16:06:03 · 12 answers · asked by NABEELiOS 1 in Mathematics

2006-10-11 16:04:24 · 9 answers · asked by girlymotoxer 1 in Geography

Hey u people are genius .......... actually I want to know the answers of these questions which i object in the previous question .... and I appreciate ur all's response ........
About my grammer mistakes ........ i m sorry for this ....... it is due to that English is not my language and here in out locality there is no use of english so whole of the day we speak d/f language ......... But by me I dont have to fullfill the rule of grammer 100%..... if u people got my point ........its good for me ...thank u again

2006-10-11 16:01:50 · 6 answers · asked by TruthExposer 1 in Astronomy & Space

if your mass differance for massing salt and water before they are mixed and after they are mixed is a negative outcome what might be some experimental errors not human errors to this lab

2006-10-11 16:01:44 · 3 answers · asked by andrew 3 in Chemistry

what weather conditions are necessary for a hurricane to occur?

what conditions must be met to classify a tropical storm as a hurricane?

describe the different catagories of hurricanes and the possible destruction of each

anatomy of a hurricane what is the eye? what is the storm surge? where do things occur?

2006-10-11 15:57:47 · 4 answers · asked by Manda K 3 in Weather

She is looking for a simple explanation with possibly diagrams (she is concerned because of the press regarding the North Korean test).

She is interested in how the explosion occurs, what is radiation, why does it last so long, and how does radiation kill people?

2006-10-11 15:57:45 · 8 answers · asked by sdms50 1 in Physics

is there a specific time the red moon happens or is it just like whenever?

2006-10-11 15:55:33 · 9 answers · asked by Spazboy 2 in Astronomy & Space

2006-10-11 15:55:15 · 7 answers · asked by curiousgeorge 1 in Biology

2006-10-11 15:54:39 · 3 answers · asked by TAZZZZ7 1 in Biology

Is it true that the higher the lattice energy the higher the bond strength

Actual Question-
The lattice energy of NaCl is -787.5kJ/mol and the lattice energy of K is -715kJ/mol
What compound is the bonding between ions stronger? Why?

2006-10-11 15:52:47 · 1 answers · asked by Anonymous in Chemistry

2006-10-11 15:49:26 · 7 answers · asked by Anonymous in Biology

at least to collect the ferrious space junk

2006-10-11 15:47:55 · 12 answers · asked by Byron Wu 1 in Astronomy & Space

Can you discribe what the structure od a neuromuscular junction, and also the function of the neuromuscular junction?


I know that a neuromuscular junction is simply the connection between the terminal branches of an axon, and the sarcolemma of a muscle figure... tell me if I have it right?

2006-10-11 15:46:16 · 3 answers · asked by chickiepoosie 1 in Biology

2006-10-11 15:43:52 · 4 answers · asked by shane m 1 in Physics

2006-10-11 15:43:02 · 4 answers · asked by shane m 1 in Physics

2006-10-11 15:41:54 · 5 answers · asked by TAZZZZ7 1 in Biology

please solve:
1.3/2(x+12)=27
2. -4/5(5x-10)=16
3.4x-8(7-x)=16
4. 45x-4(12x-3) = 12
good luck!
=]

2006-10-11 15:41:34 · 6 answers · asked by NABEELiOS 1 in Mathematics

HELP

i really dont understand my precal homework(shoot i havent understood a thing since school started) we are working on quadratic equations and inequalities..and we are doing completing the square and such so that we can graph them and find the distinct roots and such

i really dont understand this..graphing quads was something that troubled me in algebra and such

math was my favorite subject. i love math..but now it is really difficult. precal has such a different concept than algebra and such

any tips on what i should do?
i really dont want to go to my teacher..b/c she sucks and she is always busy with sports..my friends cant really help me either since they are busy and tehy dont really understand it either

i feel completely stupid..i go from high As to now i have a C in math. I am in the advanced course so she doesnt dumb it down for us. I really dont understand the concepts. I need a tutor but I dont anybody that could help me..and i dont have the time

help!!!

2006-10-11 15:40:13 · 3 answers · asked by obviousheap 2 in Mathematics

I need help in Chemistry, this is a new subect for me this year and IM totally lost, so I hoped someone could help me (by msn (I use this one the most) or yahoo msn, or could recommend me a site with tutotrials, info, work problems, etc.
-Nomenclature
-Limitin reagent problems

2006-10-11 15:40:12 · 4 answers · asked by R B 3 in Chemistry

Why do tapeworms not need a digestive system?

2006-10-11 15:39:22 · 4 answers · asked by chris76ers1 3 in Biology

The mechanics of evolution may be theory. The precise sequence of evolution may be theory. But that life, the world, the universe are evolving is undeniable.

So, in the broadest sense it is not theory, the same as the sun as center of the Solar System is not theory.

2006-10-11 15:39:09 · 21 answers · asked by nick s 6 in Earth Sciences & Geology

A train, traveling at constant speed, takes 20 seconds from the time it first enters a tunner that is 300 meters long until it completely emerges from the tunnel. one of the stationary ceiling lights in the tunnel is directly above the train for 10 seconds. Find the length of the train.

2006-10-11 15:38:29 · 2 answers · asked by globesk8er999 1 in Physics

How many setae per segment are found in an earthworm?

2006-10-11 15:38:10 · 3 answers · asked by chris76ers1 3 in Biology

2006-10-11 15:36:34 · 1 answers · asked by Jewel 2 in Chemistry