The sum of five terms of an arithmetic sequence is 60a) find the middl

1.	The sum of five terms of an arithmetic sequence is 60a) find the middle term.b) write three arithmetic sequences whose sum of first five terms is 60.(please don't answer if you don't know these two questions.)
Answer» Step-by-step EXPLANATION: a-2d,a-d,a,a+d,a+2d a-2d+a-d+a+a+d+a+2d=60 5a=60 a=12 b) 10 , 11, 12, 13, 14. d=1 8,10 12,14,16. d=2 6,9,12,15,18. d=3

The sum of five terms of an arithmetic sequence is 60a) find the middle term.b) write three arithmetic sequences whose sum of first five terms is 60.(please don't answer if you don't know these two questions.)

Answer»

Step-by-step EXPLANATION:

a-2d,a-d,a,a+d,a+2d

a-2d+a-d+a+a+d+a+2d=60

5a=60

a=12

b) 10 , 11, 12, 13, 14. d=1

8,10 12,14,16. d=2

6,9,12,15,18. d=3

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The sum of five terms of an arithmetic sequence is 60a) find the middle term.b) write three arithmetic sequences whose sum of first five terms is 60.*(please don't answer if you don't know these two questions.)*​

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The sum of five terms of an arithmetic sequence is 60a) find the middle term.b) write three arithmetic sequences whose sum of first five terms is 60.(please don't answer if you don't know these two questions.)