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5 November, 16:18

Find the 8th term of the geometric sequence 10, - 20, 40,

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  1. 5 November, 16:49
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    -1280

    Step-by-step explanation:

    10, - 20, 40, - 80, 160, - 320, 640, - 1280

    The pattern of the sign is positive, negative, positive, so the 8th term is negative. Then the rule is times 2.
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