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## Answers

The Brainliest Answer!

a=8

a(n)=62

s(n)=210

We know,

a(n) = a + (n-1)d

Also

S(n) = n(a + a(n)) / 2

⇒210 = n (8 + 62) / 2

⇒420 = 70n

⇒n = 6

a(n) = a + (n-1)d

⇒62 = 8 + (6-1)d

⇒62 = 8 + 5d

⇒54 = 5d

⇒d = 10.8

Log in to add a comment

The Brainliest Answer!

a=8

a(n)=62

s(n)=210

We know,

a(n) = a + (n-1)d

Also

S(n) = n(a + a(n)) / 2

⇒210 = n (8 + 62) / 2

⇒420 = 70n

⇒n = 6

a(n) = a + (n-1)d

⇒62 = 8 + (6-1)d

⇒62 = 8 + 5d

⇒54 = 5d

⇒d = 10.8