Solve using matrices.4x + 5y = 73x + 9y = 21
A. (3, -2)
B. (-2, 3)
C. (-2, -3)
D. (3, 2)
Answer: B
Mathematics
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A. 
B. 
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D. 
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A. 47 in. B. 58 in. C. 144 in. D. 59 in.
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Mathematics