Math, asked by nishaliju998, 4 hours ago

The sum of 15 term of an
arithmetic sequence is 495 and the 5th term is 21
a.What is the 8th term of this sequence

Answers

Answered by mufiahmotors

2

Answer:

Step-by-step explanation: Assume that it's an arithmetic sequence. a+4d = 21 => a = 21–4d. 495 = (2a+14d)(15)/2 = (42+6d)(15)/2 = 315 + 45d

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