Math, asked by zoya8478, 1 year ago

In an AP given a=7 thirteen =35 , find d and s thirteen

Answers

Answered by navneet79

1

hope it will help you

Attachments:

zoya8478: thank you so much...

Answered by atchayapannir

1

Answer:

Step-by-step explanation:

a=13

a13=35

an=a+(n-1)d

35=7+12d

d=28/12

d=2.33

Sn=13/2(35+7)

=273

zoya8478: Thanks

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