dan19_83

lol. agreed

http://www.physicscentral.com/resources/interactive.html Just doing a quick search in google gave me the link above. there is a whole list of experiments you can do, even with household items!!

Is there a particular science field you are intersted in e.g chemistry, physics, biology, ecology, etc etc etc???

Looks like buzsaw likes to type too!! I think you'll only be banned if your extremely rude to someone or post something very inappropriate. welcome

You could do your parents taxes for them!! Seriously though, i think the best thing is to get a maths book and start doing some of the difficult sums without using a calculator. If you do enough of them in your head you'll be a whizz after a while. Practices makes perfect is what i've been told!

I'm level six aswell, it doesn't sound too nice!

That's why we're here

Is this what you are looking for? http://www.scienceforums.net/forums/showthread.php?t=9549&highlight=matrix+latex

I agree. Whenever i'm study for a maths tests i just do as many examples of the questions as possible. I never try and learn formulas. If you do enough questions, the formulas will be planted firmly in your head

yes i did presume that. I worked it out like I was figuring out the odds of winning a lotto with forty numbers, chose four.

He hasn't really specified which way he wants them pulled out. Lets just say we're both right!!

here's my take on this. The odds of the first one is 4 out of 40. The odds of the second on is 3 out of 39. The odds of the third one is 2 out of 38. The odds of the fourth one is 1 out of 37. To get the probabilty of pulling out 1, 2, 3, and 4 in the first four picks is then calculated by multplying all four probabilities together: (4/40)*(3/39)*(2/38)*(1/37) = 1/91,390 Odds are not good!!

Do you want to tell us what the USAMO is?!! never heard of it

Hey I need some more help. I've managed to get rid of a few things that that virus meesed up but there are still a few things that i can't do on my laptop that I am worried about. 1. I can't right click on my desktop or any file on my computer but i can right click on the taskbar at the bottom of the screen. 2. When I go to control panel and try and change my desktop background, I can't click on any of the files in order to get a preview of the screen. (makes sense i hope). 3. When the virus installed itself it seemed to put in its own desktop. I have found my original desktop in my documents and settings. How do I activate this desktop on start up and not the one that the virus seemed to install? Any ideas?

That's not a general maths rule or anything, is it? Does it only work for 9 and 3.

When you divide by a small number e.g. (6/0.5) you get a larger number, 12. as the number get smaller under the line, the answer gets bigger and bigger until you eventually reach infinity. any number divided by zero is generally accepted as being infinity. If the number above the line is negative then the answer just becomes -infinity.

Any update? I hope things are working out.

Two sexist jokes to liven up your day. Well, the men will probably laugh anyway!! What's worse than a Male Chauvinist Pig? A woman who won't do what she's told ------------------------------------------------------------------- Scientists have discovered a food that diminishes a woman's sex drive by 90%. It's called a Wedding Cake.

These look good, thanks for your effort. Thank you all. I'll be delighted if my laptop is ok after this, sounds like it will. Damn hackers!

wow, thanks everyone for yer quick and helpful reponses. I managed to sort out a few things that the virus messed up but there are still a few things left. I'll try and skim through everything that ye have posted and try and fix this damn laptop.

I was dowloading something off of a website today and i clicked on a link and guess what. I got a big fat virus. A good one too i must admit cause i've spent all freaking day trying to get rid of it and just will not go away . It's called the backdoor.haxdoor virus i think. i've tried everything, ad-aware, spybot, stinger, symantec, but if anyone has anysuggestions, then that would be great.

Another idea i got from a friend yesterday was slight gust of wind.?