Q. Write an explicit formula for an, the nth term of the sequence 27,29,31,….Answer: an=
Identify pattern: Identify the pattern in the sequence.The sequence starts at 27 and each term increases by 2. This is an arithmetic sequence with a common difference of 2.
Determine first term: Determine the first term (a1) of the sequence.The first term of the sequence is 27.
Find common difference: Determine the common difference d of the sequence.The common difference is the amount added to each term to get to the next term, which is 2.
Write nth term formula: Write the formula for the nth term of an arithmetic sequence.The nth term an of an arithmetic sequence with the first term a1 and common difference d is given by:$a_n = a_1 + (n - \(1\))d
Substitute values: Substitute the values of \(a_1\) and \(d\) into the formula.\(\newline\)\(a_1 = 27\) and \(d = 2\), so the formula becomes:\(\newline\)\(a_n = 27 + (n - 1) \times 2\)