Solve the system by substitution.7x - 7y = 424x - 5y = 30
A. {(-1, -5)}
B. ?
C. {(0, -6)}
D. {(0, -5)}
Answer: C
Mathematics
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A. 
B. 
C. 
D. 
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Use the rules for exponents to rewrite the expression and then evaluate the new expression. 
A. 0 B. -12 C. 1 D. -4
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Solve the problem.Consider the sequence AN defined by A1 = 3, A2= 3, AN = AN-1 + AN-2. As the values of N get large, the ratios AN/AN-1 approach
A. ? + 2. B. ?. C. 3?. D. 1. E. none of these
Mathematics
Evaluate -x for the given value of x.x = 2
A. -2 B. 0 C. -3 D. 2
Mathematics