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Write an explicit formula for 
a_(n), the 
n^("th ") term of the sequence 
37,31,25,dots
Answer: 
a_(n)=

Write an explicit formula for an a_{n} , the nth  n^{\text {th }} term of the sequence 37,31,25, 37,31,25, \ldots \newlineAnswer: an= a_{n}=

Full solution

Q. Write an explicit formula for an a_{n} , the nth  n^{\text {th }} term of the sequence 37,31,25, 37,31,25, \ldots \newlineAnswer: an= a_{n}=
  1. Determine Common Difference: To find the explicit formula for the nnth term of the sequence, we first need to determine the common difference between the terms. We do this by subtracting any term from the term that follows it.\newlineCalculation: 3137=631 - 37 = -6
  2. Arithmetic Sequence Formula: The common difference is 6-6, which means the sequence is an arithmetic sequence. The formula for the nnth term of an arithmetic sequence is given by:\newlinean=a1+(n1)da_n = a_1 + (n - 1)d\newlinewhere a1a_1 is the first term and dd is the common difference.
  3. Substitute Known Values: Now we substitute the known values into the formula. The first term a1a_1 is 3737 and the common difference dd is 6-6.\newlineCalculation: an=37+(n1)(6)a_n = 37 + (n - 1)(-6)
  4. Simplify Formula: Simplify the formula by distributing the common difference.\newlineCalculation: an=376(n1)a_n = 37 - 6(n - 1)
  5. Multiply Out Terms: Further simplify the formula by multiplying out the terms.\newlineCalculation: an=376n+6a_n = 37 - 6n + 6
  6. Combine Like Terms: Combine like terms to get the final explicit formula.\newlineCalculation: an=436na_n = 43 - 6n

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