Asked by Nathabiseng

if the second term of an arithmetic sequence is 15 and the fifth term is 24. determine the third and fourth term of the sequence

Answers

Answered by Damon
a + (n-1) d

second is a + d = 15
fifth is a + 4 d = 24

so a = 15 - d
and
(15-d) + 4 d = 24
3 d = 9
d = 3
then a = 12
so term n is
12 + (n-1)3
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