Q. Write an explicit formula for an, the nth term of the sequence 150,30,6,…Answer: an=
Identify Sequence Pattern: To find the explicit formula for the nth term of the sequence, we first need to determine the pattern of the sequence.Looking at the sequence 150,30,6,…, we can see that each term is divided by 5 to get the next term.This indicates that the sequence is a geometric sequence with a common ratio of 51.
General Form of nth Term: The general form of the nth term of a geometric sequence is given by:an=a1×r(n−1)where a1 is the first term and r is the common ratio.For our sequence, a1=150 and r=51.
Substitute Values and Simplify: Now we can substitute the values of a1 and r into the formula to get the explicit formula for the nth term:an=150×(51)(n−1)This is the explicit formula for the nth term of the given sequence.
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