Mathematics
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the second term in a geometric sequence is 12. the fourth term in the same sequencce is 4/3. what is the common ratio in this sequence?

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monicabaugh

geo is an=a1r^(n-1) 2nd term is 12 4th term is 4/3 a2=a1r^(2-1)=12 a2=a1r=12 a4=a1r^(4-1)=4/3 a4=a1r^3=4/3 we have a1r=12 and a1r^3=4/3 (a1r^3)/(a1r)=r^2=(4/3)/12=1/9 1/9=r^2 sqrt oth sides 1/3=r the common ratio is 1/3

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