Solve the system using matrices. If there is no solution or if there are infinitely many solutions and a system's equations are dependent, so state.
A. infinitely many solutions; dependent equations
B. {(-5, 4, -4)}
C. {(-5, -4, 4)}
D. no solution or ?
Answer: B
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Evaluate.tan-1 
A. 
B. 
C. - 
D. 
The table below shows the hourly wages of four different job classifications at a small construction company.
Carlos Vasquez, a plumbing contractor, hires 6 plumbers from this company at
the hourly wage given in the table. If each plumber works 22 hours, what are the
total wages paid by Carlos?
A) $4244
B) $4246
C) $4224
D) $4254
E) $4256
Assuming that the equations define x and y implicitly as differentiable functions 
find the slope of the curve 
at the given value of t.x cos t + x = 2t, y = t sin t + t, t = 
A. 2
B. 
C. 2 + ?
D. 
Solve the problem.A basket contains 6 oranges and 4 tangerines. A sample of 3 is drawn. Find the probability that they are all oranges.
A. 
B. 
C. 
D. 