Question

If frist term is 15 and sum of 10th term is 35 then 10th term ?

Answer 1

Step-by-step explanation:

nth term = a+(n-1)d

First term = a = 15

Sum of n terms = n/2{2a+(n-1)d}

Sum of 10 terms = 10/2 {2(15)+(10-1)d} = 35

= 5{30+9d} = 35

= 150 + 45d = 35

= 150-35 = -45d

= 115 = -45d

= d = -115/45

d = -23/9

10th term = a+(10-1)d

= 15 + 9d

= 15 + 9(-23/9)

= 15 - 23

= -8

10th term = -8

Answer 2

Step-by-step explanation:

Here's the answer with step by step explanation.