Find the sum.
A. 
?
B. 
C. 
?
D. 1
E. 
?
Answer: C
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Solve the problem.Evaluate 
at (x, y, z) = (3, 2, 0) for the function u(p, q, r) = epq cos(r); p = 
, 
A. 12
B. 
C. 24
D. 0
Determine whether the ordered pair is a solution of the system of linear equations.(-4, 6);
A. Yes B. No
Solve the problem.A controlled placebo experiment is said to be double-blind when
A. the members of the control group are told they are in the treatment group and vice versa. B. none of the scientists conducting the study know which patients are in the control group and which patients are in the treatment group. C. neither the members of the control group or the members of the treatment group know to which of the two groups they belong. D. neither the subject nor the scientists conducting the study know which individuals are in the treatment group and which are in the control group. E. none of these
Evaluate using substitution.
