Question

please answer the question​

Answer 1

Answer:

nkkllkkk ......m......

Answer 2

Answer:

The answer to your question is: 40

Step-by-step explanation:

putting, n= 1, S1 = 7/2(1²) + 17/2(1) = 7/2+17/2 = 12

n=2, S2 = 7/2(2²) +17/2(2) = 14 + 17 = 31

We know that S1=a=12

S2 = T1 + T2

31 = 12 + T2

T2 = 31-12 = 19

So now we have, a = 12, d = 19 - 12 = 7

we have to find nth term, so using the formula

T5 = a+(n-1) d

= 12+(5-1)7

= 12+ 4(7)

= 12+28

= 40

Hope it helped you!

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