Use technology to calculate det A.A = 
A. -37
B. -147
C. 139
D. -139
Answer: D
Mathematics
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Simplify. Be sure to rationalize the denominator. Assume that all variables represent positive real numbers.
A. 
B. 
C. 
D. 
Mathematics
Find the slope of the line through the given points.(8, -2), (-8, 6)
A. 0
B. - 
C. - 
D. - 
Mathematics
Find the vertex, focus, and directrix of the parabola. Graph the equation.x2 - 10x = 4y - 49
A. vertex: (5, 6)
focus: (4, 6)
directrix: x = 6
B. vertex: (5, 6)
focus: (5, 5)
directrix: y = 7
C. vertex: (5, 6)
focus: (6, 6)
directrix: x = 4
D. vertex: (5, 6)
focus: (5, 7)
directrix: y = 5
Mathematics
Write the system of equations associated with the augmented matrix. Do not solve.
A. 
B. 
C. 
D. 
Mathematics