Respuesta :

ghanami

Answer:

Step-by-step explanation:

hello :

the n-ieme term is : An=A1×r^(n-1)

A1 the first term       r : the common ratio

in this exercice : A1 =512       r = 1/2            n = 8

A8=512×(1/2)^(8-1) = 512×(1/2)^7    

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