Math, asked by hzusb6856, 15 days ago

Sum 15 term is 570 and 12tg term is 62 then what is common difference?

Answers

Answered by usernamerakuten
0

Answer:

S¹⁵ = 570

n/2 [2a + (n-1)d] = 570

15/2 [2a + (15-1)d = 570

15/2 [2a + 14d] = 570

15[a + 7d] = 570

a + 7d = 570/ 15

a + 7d = 38 eqn 1

a¹² = 62

a + 11d = 62 eqn 2

subtract 1 from 2

4d = 24

d = 6

common difference = 6

Step-by-step explanation:

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