Asked by tankiso

1.1 the third term of an arithmetic sequence is 8 and the 15 term is 44 . Calculate: 1.1 the common difference and first term. 1.2 the sum of the first 50 terms. 1.2 1;4;7;10.... Is an arithmetic sequence .find: 1.2.1 the 30 term.

Answers

Answered by Damon
https://www.mathsisfun.com/algebra/sequences-sums-arithmetic.html
Answered by Damon
http://www.mathsisfun.com/algebra/sequences-sums-arithmetic.html

might work better
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