Determine whether the number is divisible by 3.give a reason based on the tests for divisibility 72

1 answer:

5 0

72 is dividable by 3. It is divisible by 3 because when you add 7 and 2, you get 9. According to the tests for divisibility, if the sum of the digits is divisible by 3, then the whole number is. 9 is divisible by 3, therefore 72 is as well.

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It is not recommended that points be marked with X, let's marked with C(6,6)=(Xc,Yc)

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Xc=(Xa+(m/n)Xb) / (1+(m/n)) and Yc=(Ya+(m/n)Yb) / (1+(m/n))

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