Solve the system by substitution.-2x = 5y + 19-31 = 6y - 3x
A. 
B. 
C. 
D. 
Answer: B
Mathematics
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Multiply.0.04 × 0.3
A. 0.12 B. 0.0012 C. 1.2 D. 0.012
Mathematics
Use the data set {0, -1, -3, 3, 3, -5, -7, 10} to answer the following question(s).The mean of the data set is
A. 0. B. 0.25. C. -0.5. D. 3. E. none of these
Mathematics
Perform the indicated operation and write the answer in lowest terms. - 
+ 
A. - 
B. 
C. - 
D. - 
Mathematics
Sketch the curve.
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?
A. 
B. 
C. 
D. 
Mathematics