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Levart [38]
3 years ago
11

(93) points!!! Help please?!!

Mathematics
2 answers:
Elis [28]3 years ago
7 0

Answer:

27 times 9 ^n-3

Step-by-step explanation:

AveGali [126]3 years ago
3 0

Answer:

Replace n with 3:

a_{n} = 3 * 2^{n-1} \\a_{3} = 3 * 2^{3-1} \\a_{3} = 3 * 2^{2} \\a_{3} = 3 * 4\\a_{3} = 12

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