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21 July, 10:50

Find the 7th term of the geometric sequence with the given terms.

1. a4=54, a5=162

2. a4=-4, a6=-100

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  1. 21 July, 10:55
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    1. 1458

    2. 500 or - 500

    Step-by-step explanation:

    1. a4=54, a5=162

    r = 162/54 = 3

    a7 = a5 * r²

    = 162 * 3² = 1458

    2. a4=-4, a6=-100

    r² = - 100/-4 = 25

    r = + / - 5

    a7 = a6 * r

    = - 100 * + / - 5

    = + / - 500
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