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Mathematics 18 Online
OpenStudy (anonymous):

Let setM = {x, 2x, 4x} for any number x. If the average (arithmetic mean) of the numbers in set M is 14, what is the value of x ?

OpenStudy (amistre64):

add em up, divide by 3, and set it equal to 14 ... then solve for x

OpenStudy (anonymous):

is x going to be 7

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