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2 years ago

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

Mathematics

1 answer:

Vikentia [17]2 years ago

8 0

Answer:

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.

I have done this question previously on Gauthmath app, you can check that app out, really cool app.

All the best with your exam. 

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