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Mathematics 18 Online
OpenStudy (anonymous):

Maria rewrites a fraction less than 1 as a decimal. The numerator is a whole number greater than 0. For which denominator will the fraction always convert to a repeating decimal? A. 15 B. 6 C. 11 D. 18

OpenStudy (anonymous):

sorry i was on a different question for a second

OpenStudy (welshfella):

well it cant be 6 because if say the denominator was 3 that would be 0.5 as a decimal which is non-repeating.

OpenStudy (anonymous):

ok i can see how that works...

OpenStudy (welshfella):

also 3/15 would equal 0.2 so its not 15

OpenStudy (anonymous):

is it 18?

OpenStudy (welshfella):

that leaves 2 so what do you think it might be/

OpenStudy (anonymous):

d?

OpenStudy (welshfella):

try various numerators with 18

OpenStudy (welshfella):

6/18 = 0.333.... that is recurring try some more

OpenStudy (anonymous):

so does that mean its right? or not?

OpenStudy (anonymous):

sorry if i seem rude...im kinda in a hurry im going to the store soon and im not done with hw yet

OpenStudy (welshfella):

it might be right - but can we think of another number over 18 which is not repeating decimal If so then its not 18

OpenStudy (welshfella):

what about 9/18 - what is that as a decimal

OpenStudy (anonymous):

0.5

OpenStudy (welshfella):

right so not 18

OpenStudy (anonymous):

so its 11?

OpenStudy (welshfella):

theres only 1 left

OpenStudy (welshfella):

yea

OpenStudy (anonymous):

ok thanks

OpenStudy (welshfella):

yw

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