Find a_43 given 5, 9, 13, 17,...

Cory Russell 2022-10-23 Answered
Find a 43 given 5, 9, 13, 17,...
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Answers (1)

giosgi5
Answered 2022-10-24 Author has 15 answers
From the given terms you see that the first term of the sequence is a 1 = 5 and the common difference is d=4, so to calculate the fourty third term you can use the formula:
a n = a 1 + ( n - 1 ) × d
If we substitute the given data we get:
a 43 = 5 + ( 43 - 1 ) × 4 = 5 + 42 × 4 = 5 + 168 = 173
Answer: The 43rd term is a 43 = 173
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