Respuesta :

Answer:

-2

Step-by-step explanation:

Each value is divided by -2 to get to the next term

Answer:-1/2

Step-by-step explanation:

common ratio=(2nd term➗Ist term) or (3rd term➗2nd term)

first term=104

Second term=-52

Common ratio=-52 ➗ 104

Common ratio=-1/2