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Eddi Din [679]
3 years ago
8

Given the geometric sequence where a1 = 3 and r = √2 find a9

Mathematics
1 answer:
Zigmanuir [339]3 years ago
8 0

Answer:

a_9=48

Step-by-step explanation:

we are given

sequence is geometric

so, we can use nth term formula

a_n=a_1(r)^{n-1}

we have

a_1=3

r=\sqrt{2}

we have to find a9

so, we can plug n=9

we get

a_9=3(\sqrt{2})^{9-1}

a_9=2^4\cdot \:3

a_9=48

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