Given the geometric sequence where a1 = 3 and r = √2 find a9
1 answer:
Answer:

Step-by-step explanation:
we are given
sequence is geometric
so, we can use nth term formula

we have


we have to find a9
so, we can plug n=9
we get



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4x - 2 = 2x + 8
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2x = 10
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