Math, asked by MrStark6960, 1 year ago

S9=45 of an A.P. then what is A5

Answers

Answered by Anonymous

9

9/2(2a+8d)=45
18a+72d=90
2a+8d=10
a+4d=5
a=5-4d

So,a+4d
5-4d+4d
=5

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