Estimate the fifth term if the first term is 8 and the common ratio is -1/2

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Answer to a math question Estimate the fifth term if the first term is 8 and the common ratio is -1/2

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Eliseo

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a_{5}=8\left(-\frac{1}{2}\right)^{4}

a_{5}=8\times \left(\frac{1}{16}\right)

a_{5}=\frac{1}{2}

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