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Mathematics 15 Online
OpenStudy (anonymous):

what is the prime factorization or 684?

OpenStudy (anonymous):

@jadeybells

OpenStudy (amistre64):

what is the sum of the digits?

OpenStudy (anonymous):

sry amistre i cant do this question yet bcuz i got the answer but in the answer choice it has 2 of the exact same answers so i have to email ym teacher ok thanks anyways

OpenStudy (amistre64):

we can still factor it into primes :) the process is key for study

OpenStudy (anonymous):

the answer is 2^2*3^2*19 thats the answer ok

OpenStudy (amistre64):

i can tell that since it is even, it has to be divisible by 2 the sum of the digits is 18, by some number theory thrm, since 18 is divisible by 3, so is 684 so we can reduce it by a factor of 6 [2*3] so far 684/6 = 114 .. since 114 is even, its divisible by 2, and the sum is 6 which is again divisible by 3 so far we have 2.2.3.3 114/6 = 19 ... and 19 is prime

OpenStudy (amistre64):

:) we get the same results

OpenStudy (anonymous):

yeah

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