where n is the position of the number in the sequence (ours will be 9 since we are looking for the 9th term), a1 is the first term in the sequence (ours is given as 12), and r is the common ratio (ours is given as -3). Filling all of that in to get the explicit formula we need:
and solving for the 9th term:
which gives us, simplified a bit:
soWhat is the 9th term of a geometric
sequence with a first term of 12 and a
common ratio of -3...
Mathematics, 03.06.2021 06:20 queendeon123
What is the 9th term of a geometric
sequence with a first term of 12 and a
common ratio of -3?
Answers: 1
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