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Answer:
The 5th term of an arithmetic sequence is 20 and the 8th term is 34. What is the common difference and what is the
Step-by-step explanations
first term?
a+4d=20_(1)
a+7d=34_(2)
Subtracting (1) from (2),
3d=14
d=14/3
Put d=14/3 in (1)
a+4x14/3=20
a=20-56/3
a=4/3
So first term=4/3
Common difference =14/3
Hope it helps.