the sum of an arithmetic series with 15 term is 180 then the 8th term is
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Answered by
32
S15=180
=>n/2[2a+(n-1)d] = 180
=>15/2 [2a+(15-1)d] = 180
=>15/2[2a+14d] = 180
=>15[a+7d] = 180
=>a+7d = 180/15
=>a+7d = 12
=>a8 = 12
Hence, the 8th term is 12
Hope it helps!!!
=>n/2[2a+(n-1)d] = 180
=>15/2 [2a+(15-1)d] = 180
=>15/2[2a+14d] = 180
=>15[a+7d] = 180
=>a+7d = 180/15
=>a+7d = 12
=>a8 = 12
Hence, the 8th term is 12
Hope it helps!!!
Answered by
11
Answer:
a8=12
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