Solve the problem.Determine whether (1, 4, -2) is a solution of the systemx + y + z = 3 x - y + 4z = -114x + y + z = 6
A. Yes
B. No
Answer: A
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Solve the problem.Find an equation for the level surface of the function 
that passes through the point (?, ?, 1) .
A. cos 
= 2?
B. 
= 2?
C. cos 
= 0
D. 
= 1
Suppose you have the following project digraph. (The numbers in parentheses represent hours.)
Using the critical-path algorithm to schedule this project with two processors, the total combined idle time of the two processors is
A. 7 hours. B. 3 hours. C. 1 hour. D. 5 hours. E. none of these
Provide an appropriate response.A circular cobblestone walk that surrounds a round fountain extends 5 ft from the fountain. What is the area (to the nearest whole number) of the walk if the diameter of the fountain is 12.5 ft?
What will be an ideal response?
Solve the equation.
x - 
= 
- 
A. 
B. 
C. 
D. 