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Rzqust [24]
3 years ago
14

The explicit formula for a sequence is

Mathematics
1 answer:
MAXImum [283]3 years ago
3 0

Step-by-step explanation:

\because \: a_n =  - 1 + 3(n - 1) \\  \\  \therefore \: a_{55} =  - 1 + 3(55 - 1) \\  \\ \therefore \: a_{55} =  - 1 + 3 \times 54 \\  \\ \therefore \: a_{55} =  - 1 + 162\\  \\  \huge \blue { \boxed{\therefore \: a_{55} =   161}}\\  \\

Hence, the 55th term of the sequence is 161.

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