The sum of 2nd and 30th terms of an arithmetic sequence is50.
What is the 16th term?
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Answered by
11
a2+a30=50
a+(2-1)d+a+(30-1)d=50
2a+d+29d=50
2a+30d=50
a+15d=25
so for a+(16-1)d=a+15d
then a+15d=25
a+(2-1)d+a+(30-1)d=50
2a+d+29d=50
2a+30d=50
a+15d=25
so for a+(16-1)d=a+15d
then a+15d=25
komal7413:
am I right? ??????
I think its right
okkk..
I am sure it's right
Thank you for your help
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Answered by
1
answer:
16th term is 25
..
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