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inequalities and compound sentences

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Question
Answer
what is a compound sentence?   A sentence in which two clauses are connected by the word and or by the word.  
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which property is the following.. if a < b, then a + c < b + c   addition property of ineqality  
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solve the system. {x + y= 9 {2x - y= 2   The solution is (11/3,16/3)  
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What is a square matrices?   Those with the same number of rows and columns.  
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State the system-determinant theorem.   a 2x2 system has exsactly one solution if and only if the determinant of the coefficient matrix is not zero.  
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for what value of n does the system below have infinitely many solutions? {-3x + 2y = 7 { 9x + ny =-21   -6  
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What is the solution set for a system?   The intersection of the solution sets for the individual sentences.  
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Created by: nikkrowley
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