Calcule a fração geratriz de cada uma da das dizimas periodicas compostas: a) 3,5636363

the correct answer to your question is a. 4^4

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see explanation

step-by-step explanation:

since the sequence is geometric there is a common ratio r between consecutive terms, that is

r = 4 ÷ - 2 = - 2

r = - 8 ÷ 4 = - 2

r = 16 ÷ 8 = - 2

the next term - 13 must be incorrect as it should be - 32 for the sequence to be geometric.

the first 4 terms are therefore geometric with common ratio r = - 2

i'm assuming that it's c.)   volcanoes built the mountains and earthquakes tore them down.