pl ans it my dear friends
Attachments:
Answers
Answered by
1
a = 9
a₂ = 17
a₃ = 25
d = a₂ - a₁ = 17 - 9 = 8
s₁₂ = n/2 ( 2a +(n-1)d)
= 12/2 (2(9) +(12-1)8)
= 6(18 + 88) = 6(106) =612
s₁₂ = 612
Muthu2004:
mark as brainliest
Similar questions