Math, asked by DRAGONARMY, 3 months ago

if s10=210 a=3 find d ?

Answers

Answered by jevelin

1

Answer:

= 10a = 3d = ?S10 = n/2(2a+(n-1)d)210= 10/2[2(3)+9(d)]210= 5(6+9d)210= 30+45d45d = 180d = 180/45d = 4.

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