Science & Mathematics - 1 October 2007

Using algebra, find the set of values of x for which:

2x-5 > 3/x

I know it's not just x>3, but how do I get the other solutions?

Thanks for any help.

2007-10-01 07:06:25 · 9 answers · asked by Anonymous in Mathematics

2007-10-01 07:05:24 · 4 answers · asked by Anonymous in Zoology

why is uranium dangerous?
why is platinum used for jewellery?
why is mercury used in thermometers?

2007-10-01 07:05:08 · 2 answers · asked by Anonymous in Chemistry

2007-10-01 07:04:52 · 1 answers · asked by RogerDodger 1 in Chemistry

its for science and i dont know how to do it.....=(

2007-10-01 07:00:53 · 6 answers · asked by joshua e 1 in Mathematics

As the car passes over the top of a circular hill of radius 20 m, its speed is not changing.
(a) What are the magnitude and direction of the force of the track on the car at the top of the hill if the car's speed is 11 m/s?
N

upward
downward
no force
(b) What are the magnitude and direction of the force of the track on the car at the top of the hill if the car's speed is 17 m/s?
N

upward
downward
no force

2007-10-01 06:57:43 · 3 answers · asked by Wonder 2 in Physics

1.What is the type of matter change where you cannot determine original substances, and new substances are formed?

2.What is the type of matter change in which matter stays the same and no new substances are formed?

3.What is anything that takes up space and has mass?

4.What is the type of chemical reaction in which heat is absorbed?

5.What is the type of chemical reaction in which heat is given off?

2007-10-01 06:57:39 · 5 answers · asked by V.S. 2 in Chemistry

ok, the question is:
mercury is traded by the "flask" a unit that has a mass of 34.5 kg. what is the volume of the flask of mercury if the density of mercury is 13.5g/mL?
can you work it out, and show me how to get to the answer?

2007-10-01 06:54:47 · 1 answers · asked by ashesanne 2 in Chemistry

Why open intervals will make the conclusion false?
Anyone can explain to me in details?
If possible, show me an example...
Thanks:)

2007-10-01 06:52:26 · 4 answers · asked by Anonymous in Mathematics

help me plz under stand things.!

2007-10-01 06:50:36 · 3 answers · asked by Anonymous in Mathematics

2007-10-01 06:46:35 · 6 answers · asked by kaczkagirl 1 in Astronomy & Space

2007-10-01 06:44:45 · 12 answers · asked by poi 2 in Astronomy & Space

How does a white blood cell know where to go and what to attack? How does a RNA know that it has to deliver a message to a ribosome? How do antibodies know what to attack? How does a virus know where to go? etc...
How can it do all these things without a brain or something?
I'm very curious!

2007-10-01 06:39:05 · 4 answers · asked by Anonymous in Biology

detailed answers appreciated loads its for homework plz help thx

2007-10-01 06:36:21 · 5 answers · asked by Anonymous in Chemistry

alright, I forgot these last problems and I can't figure them out
(same rules as these questions:)http://answers.yahoo.com/question/index;_ylt=Ahzt3JUUy9_N5MrpVr.XFizsy6IX;_ylv=3?qid=20071001094901AAfmDsu

if f(x) equals [square root](x-1) and g(x) equals [square root] (4-x) find f(g(2))


also...

2007-10-01 06:35:54 · 4 answers · asked by Kremer 4 in Mathematics

2007-10-01 06:34:29 · 5 answers · asked by jim1 5 in Astronomy & Space

In two dimensional array X(7,9) each element occupies 2 bytes of memory.If the address of first element X(1,1)is 1258 then what will be the address of the element X(5,8) ?
1.1460 2.1365 3. 1356 4.1370

2007-10-01 06:34:11 · 5 answers · asked by magz 1 in Mathematics

2007-10-01 06:32:15 · 8 answers · asked by KARRA C 2 in Astronomy & Space

Cr(OH)4-(aq) + OH-(aq) + H2O2 --> CrO42- (aq) + H2O (l)
Thank You!

2007-10-01 06:31:52 · 1 answers · asked by jellykelly11789 1 in Chemistry

I have been very interested in starting a ranch/farm but I don't have the means necessary to buy any land. Land is selling for between $800-$2500/acre (depending on the classification and type).

My credit is shot but I have experience in farming (did custom haying for 12 years as well as lived and worked on a farm for 8 years). Problem is my experience doesn't qualify me for any starting farmer programs (must have at least 2 years farming managment experience). Most of the farmers in my area are looking at there farms as their retirement home/fund.

So making it simply put, I have no credit and not enough experience. Still how can I make my dreams come true of starting my own farm and ranch?

2007-10-01 06:31:19 · 11 answers · asked by Lonewolf 3 in Agriculture

A 0 0 0 0 1 1 1 1
B 0 0 1 1 0 0 1 1
C 0 1 0 1 0 1 0 1
plz explain and solve it..

2007-10-01 06:29:47 · 3 answers · asked by magz 1 in Mathematics

2007-10-01 06:24:43 · 6 answers · asked by Anonymous in Biology

2007-10-01 06:19:44 · 10 answers · asked by Alexander 6 in Physics

Please answer as soon as possible!

2007-10-01 06:16:53 · 5 answers · asked by Anonymous in Chemistry

Only H+ or H2O may be added.

Cl2(g) --> ClO3-(aq) + Cl-(aq)

2007-10-01 06:13:15 · 4 answers · asked by jellykelly11789 1 in Chemistry

If hens of a certain breed lay eggs on 4 days a week, on the average, find how many days during a season of 200 days a poultry keeper with eight hens of this breed will expect to receive at least six eggs.

So, n = 200. Isn't that number a little too big unless I make it a normal approximation or something along those lines? But, that aside, I'm not sure how to interpret the laying eggs 4 days per week to obtain a value for probability (P = 4/7?), and the 200 days is confusing.

Any help'd be very much appreciated!

2007-10-01 06:11:18 · 6 answers · asked by kimiessu 2 in Mathematics

2007-10-01 06:09:30 · 8 answers · asked by Anonymous in Other - Science

2007-10-01 06:06:28 · 4 answers · asked by Hey ;) 3 in Biology

1) The current in an electromagnet connected to a 240-V line is 12.8 A. At what rate must cooling water pass over the coils if the water temperature is to rise by no more than 7.5 celcius degrees?

2) what is the efficiency of a 0.5 hp electric motor that draws 4.4A from 120V line?

2007-10-01 05:59:48 · 3 answers · asked by eri 1 in Physics

2007-10-01 05:58:33 · 8 answers · asked by Anonymous in Zoology