find the fourth term of a geometric sequence if a=6 and r=2. Use the formula an=ar^n-1

Answer:
48
Step-by-step explanation:
here, we are using an = ar^n-1
so, we have to find a4= ar^4-1 = ar^3
now, putting the given values in the equation,
a4= (6)(2)^3 = 6(8) = 48
therefore, the 4th term is 48.
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All the best with your exam.