The sum of first n terms of an A.P. is 12 (3 n ^ 2 + 7 n) then find its nth term, hence write its 15th term. PLS HELP I HV EXAM TOMORROW...
Answers
Answered by
1
Answer:
hope it helps!
plz mark me as brainliest!
your ANSWER IS IN THE ATTACHMENT BELOW!
AS YOU HAVE GOT D=3,A=5 instead of 20th term you can find 15th term by
t15 = a+(n-1)d
= 5+(15-1)3
= 5+14*3
t15 = 47...
Step-by-step explanation:
Attachments:
Similar questions