Question

a=-18 n=10 an=0 d=?​

Answer 1

Answer:

An = a + (n-1)d

0 = -18 + (10-1)d

18 = 9d

And d = 18/9 or 2 .

Answer 2

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a = -18 , n = 10 , an = 0 , d = ?

Formula used : an = a +(n-1)d

Putting the values,

0 = -18 + (10-1)d

0 = - 18 + 10d - d

- 18 + 9d = 0

9d = 18

d = 2

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