.999999 = 1

[aperson]

.999999 (repeating) does in fact equal 1.

[QreepyBORIS]

Statistically? Probably.
For non-applied mathematical purposes? No.

[aperson]

Oh, but it does in all cases.

[QreepyBORIS]

Prove it so a layman like I could understand it.

[aperson]

Oh, but it's too simple.

[BluE_MeaniE]

It doesn't, really....
Essentially, like Qreeby said, for all purposes in any math anywhere, it's basically 1. No one needs to use it as it is.
But it's not (although you're going to disagree) actually one, in the same sense that 2/3 is not .6667.
But it doesn't really matter. For instance, protons and neutrons don't actually have the same mass, but the for the purposes of all science, they both are 1amu.

But you'll say we're wrong, and it may be the case, so please, explain.
I could be absolutely wrong in this sense. I learn something knew every day!

[QreepyBORIS]

Ecks dee, you wrote that after you told me online.

Time to root through the 7th grade math book to find that. Sigh.

[VxDx]

haha I'll agree with this one, but if you use the fraction technique of proving it, I'd be interested to see since it has been a while since I've seen it done and I forget exactly how that goes (all I remember is that you get 9/9).

[aperson]

It doesn't, really....
Essentially, like Qreeby said, for all purposes in any math anywhere, it's basically 1. No one needs to use it as it is.
But it's not (although you're going to disagree) actually one, in the same sense that 2/3 is not .6667.
But it doesn't really matter. For instance, protons and neutrons don't actually have the same mass, but the for the purposes of all science, they both are 1amu.

But you'll say we're wrong, and it may be the case, so please, explain.
I could be absolutely wrong in this sense. I learn something knew every day!

Oh no, it really is 1.

[aperson]

haha I'll agree with this one, but if you use the fraction technique of proving it, I'd be interested to see since it has been a while since I've seen it done and I forget exactly how that goes (all I remember is that you get 9/9).

For all cases we assume .999 is .999 repeating

x = .999
10x = 9.999 repeating

10x - x = 9x
and
9.999 - .999 = 9
9 = 9x
1 = x

[VxDx]

That's the ticket.

[hydrojakep]

man i am lost, or just dumb

[Brainmaster07]

Yeah, probably the latter XD.

And it's pretty common knoledge .999 repeating = 1, although why is a little more complex.

[jewpinthethird]

Makes sense. But .999 does not equal one.

9.999-.999 equals one.

[hydrojakep]

aperson is like uber smart...