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Mathematics 7 Online
OpenStudy (anonymous):

The first term in a certain geometric sequence is 5 and the common ratio is 2. Find the sixth term.

OpenStudy (lgbasallote):

\[a_n = a_1r^{n-1}\] a_n = 6th term (what you're looking for) a_1 = 1st term (5) r = common ratio (2) n = number of terms (6) does that help?

OpenStudy (anonymous):

no lol >.<

OpenStudy (anonymous):

what do i do with those?

OpenStudy (lgbasallote):

you substitute.. \[a_6 = 5[(2)^{6-1}]\]

OpenStudy (anonymous):

so the answer would be 160? or no?

OpenStudy (lgbasallote):

correct

OpenStudy (anonymous):

thank you.

OpenStudy (lgbasallote):

welcome

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