Find a9 for the geometric sequence 5, –20, 80, ...

Manabu asked Oct 4, 2022

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Manabu asked Oct 4, 2022

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22 votes

Answer:

327680

Explanation:

The general formula of the formula for the sequence is 5*(-4)^(n-1). The 9th term will be 5*(-4)^8=327680

Don Box answered Oct 9, 2022

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