Asked by Bello Timothy
The 10th and 10th terms of an Ap is -27 and -12, what is the 18th term, find the sum of its 25 terms
Answers
Answered by
oobleck
The 10th and 10th terms ... ???
after you fix your typo and solve for a and d, then
a_18 = a+17d
S25 = 25/2 (2a + 24d)
after you fix your typo and solve for a and d, then
a_18 = a+17d
S25 = 25/2 (2a + 24d)
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