The sum of the 2nd and 30th terms of an arithmetic sequence is 50.
a) What is the sum of the 1st and 31st
terms?
b) What is the sum of the 15th and 17th terms?
c) What is the 16th term?
Answers
Answered by
0
Answer:
econically important bxnxnxnxjx
Answered by
0
Answer:
25
Step-by-step explanation:
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
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