Math Problem Statement
The sum of the first 10 terms of an arithmetic sequence is 225. The sum of the next 10 terms is 525. What is the first term of the sequence?
Solution
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Math Problem Analysis
Mathematical Concepts
Arithmetic Sequence
Algebra
Formulas
Sum of an arithmetic sequence: S_n = (n/2) * [2a + (n-1)d]
System of linear equations
Theorems
Properties of arithmetic sequences
Suitable Grade Level
Grades 9-12
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Sum of the First Ten Terms in an Arithmetic Sequence Problem Solution
Find the Sum of First Ten Terms in an Arithmetic Sequence