Asked by Louie
The 4th term of an arithmetic sequence is 18 and the 6th term is 28. Give the first 3 terms. Use the formula
Answers
Answered by
Reiny
a+3d = 18
a+5d = 28
subtract them:
2d = 10
d = 5
a + 15 = 18
a = 3
now form the first 3 terms
a+5d = 28
subtract them:
2d = 10
d = 5
a + 15 = 18
a = 3
now form the first 3 terms
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