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Determine whether each sequence is a geometric sequence. If yes, then state the common ratio.
120, -60, 30, -15,...

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Wegnerkolmp2741oid

Answer:

This is a geometric sequence with a common ratio of -1/2

Step-by-step explanation:

Take the second term and divide by the first term

-60/120 = -1/2

Take the third term and divide by the second term

30/-60 = -1/2

Take the fourth term and divide by the third term

-15/30 = -1/2

This is a geometric sequence with a common ratio of -1/2

Fenix40id
120 ,-60 , 30 , -15 1

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