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Mathematics 11 Online
OpenStudy (anonymous):

If 9, x , 19 is an arithmetic sequence, what is x?

OpenStudy (binary3i):

if A, B, C. are in arithmetic sequence then \[B=(A+C)/2\]

OpenStudy (anonymous):

find the arithmetic mean. follow binary3i

OpenStudy (anonymous):

Thankyousomuch! :)

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