Answer
an = 10 + (-2)( n - 1)
Explanation
The given sequence is 10, 8, 6, 4, ...
What to find:
The formula for the given sequence.
Step-by-step solution:
The first term (a) = 10
The second term of the sequence = 8
The common difference for the sequence = Second term - First term
Common difference = 8 - 10 = -2
The general formula for an Arithmetic sequence is given by:
[tex]a_n=a+d(n-1)[/tex]So putting a = 10 and d = -2, the formula for the sequence is
[tex]a_n=10+(-2)(n-1)[/tex]