Math Problem Statement
Solve for the value of n.
- Sn= -15, a1=12, d= -3, n=?
- Sn=180, a1=5, d=5, n=?
Solution
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Math Problem Analysis
Mathematical Concepts
Arithmetic Series
Quadratic Equations
Formulas
Sum of Arithmetic Series
Quadratic Formula
Theorems
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Suitable Grade Level
Grades 9-12