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If a3 = 11 and a5 = 7 and ak is the -th term of the sequence and ak = -9, then what is the value of k?
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If a3 = 11 and a5 = 7 and ak is the -th term of the sequence and ak = -9, then what is the value of k?

User Ofer Skulsky
by
8.9k points

1 Answer

1 vote
An=a3+d

-9=11+-2

2n=26

n=13
User Arjun Vekariya
by
8.3k points
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