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Verdich [7]
3 years ago
11

What is the explicit rule for the geometric sequence? 4.05, 1.35, 0.45, 0.15, ...

Mathematics
1 answer:
Lelu [443]3 years ago
5 0

Answer: First option is correct.

Step-by-step explanation:

Since we have given that

4.05, 1.35, 0.45, 0.15, ...

Since it is a geometric sequence.

So, here, a = 4.05

r = \dfrac{a_2}{a_1}=\dfrac{1.35}{4.05}=0.33

So, we know the formula for nth term in geometric sequence.

a_n=ar^{n-1}\\\\a_n=4.05(0.3)^{n-1}

Hence, First option is correct.

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