# .99999=1

• 11-26-2012, 09:49 AM
-darkknight-
.99999=1
Is .99999999 with infinite 9s equal to 1?

Can someone get this straight?

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• 11-26-2012, 10:21 AM
PostmanPat
Re: .99999=1
In math, no, in practical computing terms, yes.
• 11-26-2012, 10:41 AM
-darkknight-
Re: .99999=1
But I thought if you had an infinite series it would equal to 1

And since 1/9 is .111111
.1111111x9=.9999999
9/9=1?

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• 11-30-2012, 11:35 PM
babydoll25
Re: .99999=1
No. It does not.
• 12-01-2012, 12:02 AM
Jerry Hildenbrand
Re: .99999=1
x = 0.999...
10x = 9.999...
10x-x = 9.999... - 0.999...
9x = 9
x = 1
• 12-01-2012, 02:18 AM
Kizzmocat
Re: .99999=1

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• 12-01-2012, 02:19 AM
Johnly
Re: .99999=1
Is .99999999 with infinite 9s equal to 1?

Can someone get this straight?

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no....simply put....
• 12-01-2012, 02:39 AM
Zhara
Re: .99999=1
• 12-12-2012, 10:48 AM
Mooncatt
Re: .99999=1
x = 0.999...
10x = 9.999...
10x-x = 9.999... - 0.999...
9x = 9
x = 1
Nope. You start out already establishing x=.999... The next step is a pointless example that doesn't change anything. The third is right, but the forth is where you messed up. I don't know how you got to that, but that line shouldn't even exist.

Simply worked out, 10x-x = 9. There is no 9x=9 or anything like that.
• 02-18-2013, 02:10 PM
-darkknight-
Re: .99999=1
Hmmm I'm still confused

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