Math, asked by cunnikrishnan26, 1 month ago

In an arithmetic sequence 10th term is 20 and 20th term is 10. 1) what is the common difference? 2) write the first term. 3) what is the algebraic expression for this sequence? 4) what is the 30 th term?
3rd question answer please use this equation Xn=dn+(f-d)

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In an arithmetic sequence 10th term is 20 and 20th term is 10. 1) what is the common difference? 2) write the first term. 3) what is the algebraic expression for this sequence? 4) what is the 30 th term?3rd question answer please use this equation Xn=dn+(f-d)​

Answers

In an arithmetic sequence 10th term is 20 and 20th term is 10. 1) what is the common difference? 2) write the first term. 3) what is the algebraic expression for this sequence? 4) what is the 30 th term?
3rd question answer please use this equation Xn=dn+(f-d)