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juin [17]
3 years ago
13

The first term of an arithmetic sequence is 4 and the fifth term is 16. what is the nth term of the sequence?

Mathematics
1 answer:
svetlana [45]3 years ago
7 0
T1 = 4
4 = a

T5 = 16
16 = 4 + 4d
4d = 12
d = 3

Tn = 4 + ( n - 1 ) 3
Tn = 4 + 3n - 3
Tn = 3n + 1

the answer is b
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