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5 February, 12:12

What is the 7th term of the geometric sequence where a1 = - 4,096 and a4 = 64?

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  1. 5 February, 14:24
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    First, we calculate the common ratio.

    an = arⁿ⁻¹

    64 = - 4096r³

    r = - 1/4

    a (7) = - 4096r⁷⁻¹

    a (7) = - 1
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