Asked by rhey
The second term of an arithmetic sequence is 24 and the fifth term is 3.Find the first term and the common difference.
Answers
Answered by
Reiny
Use your formulas.
a+d = 24
a+4d = 3
subtract them:
3c = -21
d = -7
in a+d=24
a=7=24
a = 31
first term is 31, common difference is -7
a+d = 24
a+4d = 3
subtract them:
3c = -21
d = -7
in a+d=24
a=7=24
a = 31
first term is 31, common difference is -7
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