littleb760 littleb760

19-05-2016
Mathematics

Answered

Which sequence is geometric and has 14 as its fifth term and 12 as the common ratio?

Verified Answer :

apologiabiology apologiabiology

19-05-2016

geometric sequence is
an=a1(r)^(n-1)
an=nth erm
a1=first term
r=common ratio

5th term=14
a5=a1(12)^(5-1)=15

a1(12)^4=15
a1(20736)=15
divide both sides by 20736
a1=15/20736=5/6912
geometric sequence is
an=(5/6912)(12)^(n-1)

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