Use Cramer's rule to solve the system.
A. {(6, -1, 2)}
B. {(5, 1, 2)}
C. {(1, 2, 1)}
D. {(5, -1, -2)}
Answer: B
Mathematics
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Determine whether or not the function is one-to-one.
A. Yes B. No
Mathematics
Solve using the addition principle and/or the multiplication principle.
x = 11
A. 13 B. 11 C. 20 D. 22
Mathematics
Fill in the blank with one of the words or phrases listed below. 
The basic unit of length in the metric system is the 
.
A. liter B. gram C. meter D. perimeter
Mathematics
Determine whether the equation is an identity, a conditional equation, or an inconsistent equation.
= 7
A. Identity B. Conditional equation C. Inconsistent equation
Mathematics