Question

a6=5a and a11 =2a5+3. Find a8

Answer 1

Step-by-step explanation:

Given, a1+a2+a3+a4+a5+a6+a7+a8+a9+a10+a11+a12= 360

78a= 360

a= 360/78

a= 60/13 ....(1)

Next, a1+a3+a5+a7+a9+a11= 36a

= 36*60/13

= 2160/13

= 166 2/3

Answer 2

Answer:

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