Which shows the use of the associative property?

7 n + one-fifth = one-fifth + 7 n

7 + (one-fifth + n) = (7 + one-fifth) + n

7 (n + one-fifth) = 7 n + StartFraction 7 Over 5 EndFraction

(7 + one-fifth) + n = 7 and one-fifth + n

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Suppose the radius of a circle is 16. what issuppose the radius of a circle is 16. what is its circumference its circumference

What is the standard deviation of the following data set rounded to the nearest tenth? 3, 17, 18, 15, 12, 21, 9

1- what do you think the product of a nonzero rational number and an irrational number is? is it rational or irrational? make use of variables, the closure property of integers, and possibly a proof by contradiction to prove your hypothesis.2- why do we have to specify that the rational number must be nonzero when we determine what the product of a nonzero rational number and an irrational number is? if the rational number were 0, would it give us the same result we found in the first question?