Science & Mathematics - 6 January 2007

A) (0, 2) B) (–3, 0) C) (–3, –2) D) (0, –2)

2007-01-06 09:03:16 · 8 answers · asked by CelticMoonGoddess 2 in Mathematics

Hi all. i am having my math o level test tomorrow so can u help me solving this question?
thanx
the question is:
solve this :

2
______
x-3
_

1
______
x+4
P.S: i mean as fractions.

2007-01-06 09:02:21 · 5 answers · asked by Anonymous in Mathematics

2007-01-06 09:01:23 · 7 answers · asked by seven n 1 in Botany

A student reacts 156 g of C2H4(g), 290 g of Bromine(g) and 354 g of Chlorine (g) to form C2H4ClBr(g).

1. Write out the balanced chemical reaction.
2. Which reactant is the limiting reagent?
3. How many moles of C2H4ClBr will be produced?
4. What mass of C2H4ClBr will be produced?
5. After the reaction is completed how many moles of each reactant will remain?

2007-01-06 09:00:55 · 4 answers · asked by Maria18 2 in Chemistry

Brachiopods are marine animals.

2007-01-06 08:59:25 · 2 answers · asked by brooklyntrail 1 in Biology

i kno that some are

having lots of fur

shorter limbs to maintain the loss of heat

feet warming (penguins mostly)
what are other forms

2007-01-06 08:59:01 · 1 answers · asked by kdreads44 1 in Biology

When you look at the galaxy is the matter spread out horizontally or veritically? or both?

2007-01-06 08:58:12 · 3 answers · asked by Jerry 2 in Astronomy & Space

Euler's formula was originally derived by means of infinite series of trigonometric and exponential functions. Can it be proven without expanding functions, and without using DeMoivre's formula, which would make it a circular argument? Why necessarily e^(i x) a vector on the complex plane where x is its angle from the real axis?

2007-01-06 08:57:41 · 4 answers · asked by Scythian1950 7 in Mathematics

How much time passed before the elements as we know them were formed?

2007-01-06 08:55:40 · 7 answers · asked by sunny p 1 in Chemistry

2007-01-06 08:54:50 · 8 answers · asked by Anonymous in Engineering

the statment " vitamin requirements are species specific"?

2007-01-06 08:53:51 · 6 answers · asked by Hally berry 3 in Biology

2007-01-06 08:52:28 · 10 answers · asked by Anonymous in Engineering

do micronutrients differ from macronutrients?

2007-01-06 08:51:15 · 3 answers · asked by Hally berry 3 in Biology

2007-01-06 08:50:58 · 4 answers · asked by galena 2 in Chemistry

I moved into an older home about a month ago. I have since been told ghost story after ghost story about my house and have brushed it off. The other night my two year old woke me up when I fell asleep on the couch at five am she said my room was noisy. When I was fully awake she stated that a ghost came out my closet and told her to get out my house. If this had of been any of the other children it would not bother me, but because it was a two year old who has no such information on ghosts and things like that it really bothers me. Now I have not heard any strange noises and I have not personally seen anything, but I have often heard that ghosts and spirits will often be seen by innocent children over adults. Is there a sight where I can check more into this? please someone help me.

2007-01-06 08:48:17 · 13 answers · asked by ang500el 1 in Paranormal Phenomena

Every night when I would walk home from class when I would go by street lights they would turn off. Sometimes if they were already off they would go on. Does anyone know what causes this and if so, I'm sure I'm not the only one who has had this happen.

2007-01-06 08:48:14 · 14 answers · asked by Anonymous in Other - Alternative

can someone please tell me how gametes are produced.
Thankyou!!

2007-01-06 08:45:13 · 4 answers · asked by barnie 1 in Biology

I would like to make a sinusodial equation in the form y=a*sin(bx+c)+d and dont know how to make it. I have the following information :
median=0
amplitude=160
period=1/60
start point=(0,0)

2007-01-06 08:45:02 · 4 answers · asked by Lindsey P 2 in Mathematics

2007-01-06 08:44:24 · 9 answers · asked by The enforcer 1 in Physics

I can't graph more than one function. I think that it has something to do with the thing to the left of Y1, etc. When I change that (by pressing enter), it never goes back to \.

2007-01-06 08:43:46 · 3 answers · asked by Anonymous in Mathematics

2007-01-06 08:43:41 · 5 answers · asked by The enforcer 1 in Physics

Why, when we lift our eyes to the skies and see a plane flying, does it seem that the plane moves really slow, when in fact at that moment the plane might be flying at 800, 900 or even 1000 km per hour?

2007-01-06 08:42:53 · 11 answers · asked by Anonymous in Astronomy & Space

The directions on a concentrated cleaner state that 3 tablespoons of concentrate make 345 ounces of cleaning fluid. How many ounces of cleaning fluid will 2 tablespoons of cleaner make?


And this question as well,

A small business jet took 1 hour longer to fly 810 miles on the first part of a flight than to fly 540 miles on the 2nd portion. If the jet's rate was the same for each leg of the flight, what was the flying time for each leg? To solve this problem, set up two expressions for the jet's rate (using r = d/t), where the unknown quantity is t. Then, set the two rate expressions equal to each other, since the problem states that the rates are the same during each leg.

2007-01-06 08:41:01 · 3 answers · asked by CookFrNW 3 in Mathematics

Why, when we lift our eyes to the skies and see a plane flying, does it seem that the plane moves really slow, when in fact at that moment the plane might fly at 800, 900 or even 1000 km per hour?

2007-01-06 08:40:52 · 13 answers · asked by Anonymous in Physics

ive always wanted to know....

2007-01-06 08:38:06 · 6 answers · asked by acme0072004 1 in Mathematics

-3a^2b 14a^3b^2
35a^5 (*) -9b^4

Please help me with these fractions !!


n^2 -n-20 n^2 +5n
2n^2 (* ) n^2 -25

2007-01-06 08:37:48 · 1 answers · asked by CookFrNW 3 in Mathematics

do proteins perform in the body.

2007-01-06 08:37:34 · 4 answers · asked by nargis 2 in Biology

2007-01-06 08:37:04 · 1 answers · asked by lala b 1 in Botany

it dosn't madder the type of car

2007-01-06 08:32:46 · 4 answers · asked by red_star_56 4 in Physics

can the medication soma send a person into respitory failure.

2007-01-06 08:31:42 · 5 answers · asked by Anonymous in Medicine