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22-01-2019
Mathematics

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Find the specified term in each sequence using the Geometric Explicit Formula

Find the specified term in each sequence using the Geometric Explicit Formula class=

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22-01-2019

Answer:

a7 = 4

Step-by-step explanation:

r = a2/a1 = -128/256 = -1/2

an = a1·r^(n-1)

a7 = 256·(-1/2)^(7-1) = 256·(1/64)

a7 = 4

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