Respuesta :

devin561
Common ratio is 5 or -5 to be more precise. 225 divides by 45=5 and 45 divided by 9=5. So the common ratio is 5.
TPS00
First term of sequence, a1 = 225

next term, a2 = 45

[tex]common \: ratio = \frac{a2}{a1} \\ \\ r = \frac{45}{225} \\ \\ r = \frac{1}{5} [/tex]

common ratio is 1/5.

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