Solve the problem.True or false, given a system of two linear equations in two variables, if the graphs of the two equations are distinct parallel lines, then the system has no solution.
A. True
B. False
Answer: A
Mathematics
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Use an inverse matrix to find the solution to the system.
A. x = 5, y = -2, z = -7 B. x = 6, y = 0, z = 7 C. x = 5, y = 2, z = 7 D. x = 2, y = 7, z = 2
Mathematics
Round as indicated.81 to the nearest ten
A. 90 B. 70 C. 80 D. 60
Mathematics
Simplify the expression. Assume that all variables are positive when they appear.
A. 
B. 
C. 
D. 
Mathematics
Perform the indicated operation.
A. 140 B. -50 C. -130 D. 130 E. -140
Mathematics