Asked by Charles
How many terms of the arithmetic sequence 88, 85, 82, . . . appear before the number -17 appears?
Answers
Answered by
Reiny
in your sequence, a = 88, d = -3
so you want a + (n-1)d = -17
88 + (n-1)(-3) = -17
88 - 3n + 3 = -17
-3n = -108
n = 36
state your conclusion
so you want a + (n-1)d = -17
88 + (n-1)(-3) = -17
88 - 3n + 3 = -17
-3n = -108
n = 36
state your conclusion
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