jaystewart99 jaystewart99

25-07-2017
Mathematics

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Given the arithmetic sequence where a1=6 and a5=-6 , what is a3

Given the arithmetic sequence where a16 and a56 what is a3 class=

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RickyChen RickyChen

25-07-2017

Assume the arithmetic quotient is n.

Then a5 = a1 + 4n -> 4n = 12 -> n = 3

So a3 = a1 + 2n = -6 + 6 = 0

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