Find the term named in the problem. -21, - 13, -5, 3, ... Find a23

asked Mar 16, 2021 18.7k views

2 votes

Find the term named in the problem.
-21, - 13, -5, 3, ...
Find a23

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5 votes

a(n) = a(1) + ( n - 1 ) × d

a(23) = -21 + ( 23 - 1 ) × 8

a(23) = -21 + ( 22 ) × 8

a(23) = -21 + 176

a(23) = 155

And we're done....

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Andreas Ka answered Mar 20, 2021

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