Math Is Fun Forum
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#801 Re: Maths Is Fun - Suggestions and Comments » Equation of a Straight Line » 2006-10-23 01:38:34
Hai, we use y=mx+c in Australia 
#802 Re: Introductions » Hello everybody » 2006-10-20 20:12:03
ewww 
#803 Re: Puzzles and Games » The Monty Hall Problem » 2006-10-20 02:39:10
I think people think the solution is counter-intuitive mainly because people don't take into account the fact that because they picked door x, the host is unable to pick the same door, which affects the probabilities.
Had the guest not selected doors x, y or z, then after the host selected one of them, naturally the probability of the car being in one of the remaining doors would be 0.5.
#804 Help Me ! » Areas of Regular Polygons » 2006-10-20 02:26:23
- Toast
- Replies: 4
How would I go about finding the area of a regular hexagon if I only know the side lengths, which are, say, 8cm? Can you please explain how you got the result.
#805 Re: Puzzles and Games » Vocabulary Test » 2006-10-20 02:21:43
Are we supposed to answer those?
Guess so lol, oh well, the words are extremely random...so... not quite sure a vocab topic should run...
#806 Re: Introductions » Hello everybody » 2006-10-19 17:57:07
Yeah, toast is one of the most versatile things around.
#807 Re: Introductions » Hello everybody » 2006-10-19 02:51:49
lol thanks 
yours is awesome too
#808 Re: Help Me ! » Help needed again...but first time in few months ^.^! » 2006-10-19 02:48:04
Question one has a few answers.
The equation is:
10x+y can take the values of 75 and 64 to name two.
The digits are x and y. In the second half, you have 10x because it is in the 'tens' column, needed to form a 2 digit number.
#809 Puzzles and Games » The Monty Hall Problem » 2006-10-19 00:49:07
- Toast
- Replies: 5
Simple, yet twisted:
Suppose you're on a game show, and you're given the choice of three doors: Behind one door is a car; behind the others, goats. You pick a door, say No. 1, and the host, who knows what's behind the doors, opens another door, say No. 3, which has a goat. He then says to you, "Do you want to pick door No. 2?" Is it to your advantage to switch your choice?
Whaddaya reckon?
#810 Re: Puzzles and Games » Vocabulary Test » 2006-10-19 00:12:29
1. Evangelic
2. Filament
3. Conundrum
4. Onomatopoeia
5. Incandescence
6. Quanta
7. Synchronism
8. Vertigo
9. Agoraphobia
10. Pneumonoultramicroscopicsilicovolcanoconiosis
hehe
#811 Re: Help Me ! » Algebra is *too* hard.. » 2006-10-18 18:07:08
My teacher surfs the net and talks sport during maths class, so I can't really rely on him either xD
Anyways, all of us here would be glad to help you with any problems you have.
#812 Re: Jokes » The Top Ten Excuses for Not Doing Any Homework » 2006-10-18 03:21:14
haha they're all great, especially like the first one
#813 Re: Help Me ! » Simultaneous Literal Equations » 2006-10-18 01:08:37
lol sorry, i didn't look properly at who wrote the message
#814 Help Me ! » Linear Equations - The Escalator » 2006-10-18 00:26:38
- Toast
- Replies: 1
If you walk 26 steps down an escalator you need 30 seconds to reach the bottom. If you take 34 steps, you only need 18 seconds to reach the bottom.
Show that if the escalator is stationary, you have to walk 46 steps to get to the bottom.
Aaargh! I can't draw a graph for this or find an equation, it's like nothing i've learnt so far!
#815 Introductions » Hello everybody » 2006-10-17 22:48:18
- Toast
- Replies: 71
Sup everyone, I'm Toast! I'm from Australia and am in grade 9, and I am very enthusiastic about both maths and music. Glad I found this awesome website
#816 Re: Help Me ! » Simultaneous Literal Equations » 2006-10-17 22:29:19
Thanks mathsyperson
(woops)
#817 Help Me ! » Simultaneous Literal Equations » 2006-10-17 21:56:08
- Toast
- Replies: 6
to
to
by subtraction
to
Correct?
According to the answers section, no. Can someone tell me where I went wrong?
I have a feeling the subtraction bit is wrong, can someone help me plz.
#818 Re: Puzzles and Games » Vocabulary Test » 2006-10-17 19:55:16
Without using a dictionary (honest) :
2. ?!?!?
#819 Re: Help Me ! » Hard(ish) Geometry problem 2 » 2006-10-17 19:49:12
Hi tony,
I'm afraid I only understand about half of your solution. Could you please tell me how you came up with the measurements of 5 and 2.5? Thanks.
Anyway, I have my own (probably much more confusing) solution which I just found out today. It involves making the prism into a net and using pythagoras there. I'll post it as soon as I get the problem sheet back (it's not fresh in my mind).
#820 Re: Dark Discussions at Cafe Infinity » Anything Spooky Happen to you on Friday the 13th? » 2006-10-16 22:07:05
Hmmm... if you make a bet with someone, you can prove that Firday the 13th is not unlucky. Even if you lose, the other wins, so the overall result =
#821 Re: Jai Ganesh's Puzzles » 10 second questions » 2006-10-16 19:45:49
Are we allowed to use calculators?
#822 Re: Dark Discussions at Cafe Infinity » Music; what's your song? » 2006-10-16 19:42:08
I like (perhaps oddly) a lot of square enix game music at the moment. Some of music there can be pretty powerful and moving; it's like a whole new genre.
#823 Re: Help Me ! » Hard(ish) Geometry problem 2 » 2006-10-13 20:33:25
Anyone?
Is this even solvable?
#824 Re: Help Me ! » Hard(ish) Geometry problem 2 » 2006-10-12 22:48:49
Huh? All the angles in the ribbon are the same? I'm so confused -.-
#825 Re: Help Me ! » solve square » 2006-10-12 22:02:40
Hi everyone!
Lol mathysperson that's a very confusing way to solve for x, I don't even know what you're talking about. I woulda simply used the quadratic forumula:
since
so
(omg i can use latex now xD, it feels so good when the equation comes out right)