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What is the 24th term of the arithmetic sequence where a1 = 8 and a9 = 56 ?

What is the 24th term of the arithmetic sequence where a1 = 8 and a9 = 56 ?
asked 146k views
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What is the 24th term of the arithmetic sequence where a1 = 8 and a9 = 56 ?

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User Jainil
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2 Answers

6 votes

Answer:the answer would be c which is 146

Explanation:

answered
User George Cscnt
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6 votes
the formula is Tn = a + (n-1)d for arithmetic sequence
where Tn is the term, a is the first term, n is the no. of term, d is the difference
a = 8
Using a9=56,
56 = 8 + (9-1)d
48 = 8d
d = 6
thus, Tn = 8 + (n-1)6
when n=24, Tn = 8 + (24-1)(6) = 146
answered
User Addzy K
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9.1k points
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