Math, asked by palak634, 1 year ago

given l=28,s=144 and there are total 9 terms ..find a

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Answered by ams68

13

Answer:

,.,,,ANSWER in attached photo

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Answered by viji18net

5

Answer:

S=144 l=28 n=9

Sn=n/2(a+l)

9/2(a+28)=144

a+28=32

a=4

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