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Re: 3.99... = 4

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LazyDogEatsBread is not online. LazyDogEatsBread
Joined: 09 Aug 2011
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11 Aug 2011 08:31 PM
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tommy517 is not online. tommy517
Joined: 07 Jul 2008
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11 Aug 2011 08:32 PM
omg too much for my 6th grade head
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Ninjaman9000 is not online. Ninjaman9000
Joined: 18 Apr 2009
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11 Aug 2011 08:32 PM
wat
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coolbulls is not online. coolbulls
Joined: 04 Jul 2008
Total Posts: 3740
11 Aug 2011 08:32 PM
10x= 39.90
Learn to math

~You's Trollin~
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155 is not online. 155
Joined: 31 Jan 2009
Total Posts: 840
11 Aug 2011 08:33 PM
I don't care what sort of silly equations you can develop

because 3.99... will never be 4.
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angelguy247 is not online. angelguy247
Joined: 24 Aug 2009
Total Posts: 2980
11 Aug 2011 08:33 PM
Agreed with Cool.
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L2000 is not online. L2000
Joined: 03 Apr 2008
Total Posts: 77448
11 Aug 2011 08:33 PM
x = 3.99...
10x = 39.99...
10x - x = 39.99... - x
9x = 36
9x/9 = 36/9
x = 4

You did the third line wrong. You can't subtract x from the other side, since you aren't supposed to know what it is.

10x/10 = 39.99/10
x = 3.99

- Canadian Idiot -
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edudogel is not online. edudogel
Joined: 11 Aug 2009
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11 Aug 2011 08:34 PM
9X3.99=35.91
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Romanji is not online. Romanji
Joined: 24 Feb 2011
Total Posts: 978
11 Aug 2011 08:34 PM
I remember learning how to do this with some fancy formula and crap.
Freakin' math, always gotta be complicatin' crap with formulas.
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iornfence is not online. iornfence
Joined: 23 Feb 2010
Total Posts: 7305
11 Aug 2011 08:34 PM
tommy, I learned that stuff in the 6th grade.
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LazyDogEatsBread is not online. LazyDogEatsBread
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11 Aug 2011 08:34 PM
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155 is not online. 155
Joined: 31 Jan 2009
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11 Aug 2011 08:34 PM
@ Coolbulls

No, 10 x 3.99... (dots mean infinate) = 39.99...
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WilliamD3001 is not online. WilliamD3001
Joined: 25 Jun 2010
Total Posts: 1487
11 Aug 2011 08:34 PM
10x = 39.90
___ _____

10x 10x


x = 3.99


Get your facts right. And I'm also in 6th grade.
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LazyDogEatsBread is not online. LazyDogEatsBread
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11 Aug 2011 08:35 PM
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WilliamD3001 is not online. WilliamD3001
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11 Aug 2011 08:35 PM
That there is teh simple stoof.
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LazyDogEatsBread is not online. LazyDogEatsBread
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11 Aug 2011 08:36 PM
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edudogel is not online. edudogel
Joined: 11 Aug 2009
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11 Aug 2011 08:36 PM
nope OP is wrong
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LazyDogEatsBread is not online. LazyDogEatsBread
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11 Aug 2011 08:38 PM
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Romanji is not online. Romanji
Joined: 24 Feb 2011
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11 Aug 2011 08:38 PM
What's this used for again?
The sum of an infinite arithmetic sequence?
Like 1+1/2+1/4+1/8...
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sonicsbro337 is not online. sonicsbro337
Joined: 22 Jun 2008
Total Posts: 8204
11 Aug 2011 08:38 PM
I would say yup

but yup.jpg doesn't exist, so kay
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155 is not online. 155
Joined: 31 Jan 2009
Total Posts: 840
11 Aug 2011 08:39 PM
Unfortunately, I forgot much about algebra during the summer, so I cannot disprove your "fact" with anything more solid than the blatant knowledge that 1x10(to some negative infinate power or 0.0000000000000000000000000000000000000000000000001 and on) is still a number.
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Romanji is not online. Romanji
Joined: 24 Feb 2011
Total Posts: 978
11 Aug 2011 08:44 PM
Looked through my old math notes. I remember now. :)
It's for the sum of an infinite geometric sequence. And then there's some fancy formula with Greek letters that I can't type out.
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Pizza1423 is not online. Pizza1423
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11 Aug 2011 08:45 PM
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coolbulls is not online. coolbulls
Joined: 04 Jul 2008
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11 Aug 2011 08:47 PM
10x will then = 39.99...0
You still need to learn to math


~You's Trollin~
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Pizza1423 is not online. Pizza1423
Joined: 12 Mar 2010
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11 Aug 2011 08:49 PM
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