Question

for an arithmetic progression with a common difference of 5,the sum of 4th and 8th term is 10. find the value of its 2nd term.​

Answer 1

Answer:

$second \: term \: is \: - 15$

Step-by-step explanation:

$d = 5 \\ (a + 3d ) + (a + 7d) = 10 \\ 2a + 10d = 10 \\ therefore \: \: \: 2a + 50 = 10 \\ 2a = - 40 \\ a = - 20 \\ \\ second \: term = \: a + d \\ = - 20 + 5 \\ = - 15$

Answer 2

Answer:

Second term is -15