Write a Formula for the General Term (The Nth Term)of $r a _ { n }$

question 298

Multiple Choice

Write a formula for the general term (the nth term) of the arithmetic sequence. Then use the formula for $r a _ { n }$ to find $a _ { 20 }$ , the 20th term of the sequence.
- $$a _ { n } = a _ { n - 1 } - 10 , a _ { 1 } = 36$$

• A) \(a _ { n } = - 10 n + 46 , a _ { 20 } = - 154\)
• B) \(a _ { n } = 36 n + 46 , a _ { 20 } = 766\)
• C) \(a _ { n } = - 10 n + 26 , a _ { 20 } = - 174\)
• D) \(a _ { n } = 26 n + 36 , a _ { 20 } = 556\)

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Mean

A statistical measure representing the average value of a set of numbers, calculated as the sum of all the values divided by the number of values.

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