Question
Consider the arithmetic sequence given by the following values of \( a_{1} \) and \( d \). \[ a_{1}=8 \quad \text { and } \quad d=5 \] Determine the ninety-first term of the sequence. \( a_{91}= \) Submit Question
Ask by Frazier Lang. in the United States
Jan 17,2025
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The 91st term of the sequence is 458.
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Mind Expander
To find the ninety-first term of the arithmetic sequence, you can use the formula for the \( n \)-th term of an arithmetic sequence, given by: \[ a_n = a_1 + (n - 1) \cdot d \] Here, \( a_1 = 8 \), \( d = 5 \), and \( n = 91 \). Plugging in these values: \[ a_{91} = 8 + (91 - 1) \cdot 5 \] \[ = 8 + 90 \cdot 5 \] \[ = 8 + 450 \] \[ = 458 \] Thus, the ninety-first term of the sequence is \( a_{91} = 458 \).