29-06-2015
Mathematics

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Find the 9th term for the sequence a(n)=7-9n.

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ashisthebest1 ashisthebest1

29-06-2015

just plug in 9 for n

a(n) = 7 - 9n

a(9) = 7 - 9(9)

a(9) = 7 - 81

a(9) = -74

so the 9th term is -74

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