Asked by Josie
The 1st term of an arithmetic sequence is 15. The 4th is 39. What is the 2nd term of this sequence?
Answers
Answered by
Anonymous
Tn = a + (n-1) d
a = 15
T4 = 15 + (4-1)d = 39
15 + 3 d =39
3d = 24
d = 8
T2 = 15 + (1) 8 = 23
a = 15
T4 = 15 + (4-1)d = 39
15 + 3 d =39
3d = 24
d = 8
T2 = 15 + (1) 8 = 23
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