Solve the system by the substitution method. If there is no solution or an infinite number of solutions, so state. Use set notation to express the solution set.
A. {(2, -2)}
B. no solution; ?
C. {(-2, -1)}
D. {(1, -1)}
Answer: A
Mathematics
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and u = 
A. 0
B. 
C. 
i - 
j
D. 
i - 
j
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Which triangles, if any, are right triangles?
A. A B. B C. A and B D. neither triangle
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Firms that use the related linked diversification multiproduct strategy create economies of scope by achieving ____ relatedness.
A. corporate B. competency C. operational D. both operational and corporate
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Use the definition of square root to find the indicated product.
?
?
A. ?
B. ?
C. ?
D. ?
E. ?
Mathematics