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Mathematics 20 Online
OpenStudy (anonymous):

a

OpenStudy (anonymous):

No cheating (no Google).

OpenStudy (anonymous):

Is this the 9/10+ 9/100 +9/1000 thing haha?

OpenStudy (anonymous):

It could be, it may not be. :)

OpenStudy (paki):

simple... round 0.9999999 and it will be 1 :D

OpenStudy (anonymous):

I know how to do it, I'll let someone else have the glory :p

OpenStudy (anonymous):

lol not a proof @paki :P

OpenStudy (anonymous):

@iambatman you won my last quiz with the star and lines, nice to share the glory lol

OpenStudy (anonymous):

:), there's more than one way to doing this, I want to see how others will do it haha.

OpenStudy (anonymous):

Yeah. I am expecting the proof involving multiplication (hint!)

OpenStudy (paki):

what will we do with the "MEDAL" ;-)

OpenStudy (anonymous):

Barter it for a protein shake; wear it around your neck, whatever. :)

OpenStudy (paki):

:d

OpenStudy (anonymous):

*cough* precedence *cough*

OpenStudy (paki):

this misery can be solved by geometric series... :-)

OpenStudy (anonymous):

lol

OpenStudy (anonymous):

Yeah that was my first approach @paki

Miracrown (miracrown):

LOL so because 0.999999... goes on indefinitely it is considered to = 1 there are a few ways to solve this, but ill give you the algebraic way of proving it so lets say x = 0.9999999999

OpenStudy (anonymous):

|dw:1397027460964:dw| ok give me my medal

OpenStudy (anonymous):

I will take sufficiently expanded geometric series as acceptable proof if you have the patience to type it out, but the easier proof that i know if is argument from precedence

OpenStudy (anonymous):

lol that is not sufficiently detailed batman, but it's close..

Miracrown (miracrown):

batman desperately wants his medal.

OpenStudy (anonymous):

I'm too lazy

OpenStudy (anonymous):

let's go mira :P prove it

Miracrown (miracrown):

anyways so by definition if we take 10x - 9x = 1x correct?

Miracrown (miracrown):

which is the same as 10x - 1x = 9x

Miracrown (miracrown):

so now lets put in the values for 10x - 1x if x = 0.99999....|dw:1397027696622:dw|

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