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OpenStudy (anonymous):
prove that 0.9 =1. Hint: think fractions like 1/9
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OpenStudy (anonymous):
.9 is not equal to 1 .999999999 repeating is equal to 1 big difference
OpenStudy (anonymous):
so 9 with a line over the top means its repeating
OpenStudy (anonymous):
i dont see a line on top of the 9
OpenStudy (anonymous):
let x= .9999999... 10x= 9.999999... 10x-x= 9.99999...-.999999... 9x= 9 x=1 .9999... = 1
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