ArianaBrande ArianaBrande

12-03-2018
Mathematics

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The first 5 terms of an arithmetic sequence are 2, 8, 14, 20, 26. The 15th term of this sequence will be?.....

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dizonc009 dizonc009

12-03-2018

an = nth term
a1 = 2 (first term)
n = 15 (number of terms)
d = 6 (common ratio)
.
an = a1 + (n - 1)d
a15 = 2 + (15 - 1)6
a15 = 2 + (14)6
a15 = 2 + 84
a15 = 86

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