Indicate whether the statement is true always, sometimes, or never.The difference between two real numbers is a real number.
A. Never
B. Sometimes
C. Always
Answer: C
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Find the flux of the vector field F across the surface S in the indicated direction.F = 7xi + 7yj + 3k; S is "nose" of the paraboloid z = 5x2 + 5y2 cut by the plane z = 3; direction is outward
A. - 
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B. 
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C. 
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D. 
Solve the application problem.A rug is to fit in a room so that a border of even width is left on all four sides. If the room is 19 feet by 24 feet and the area of the rug is 300 square feet, how wide will the border be?
A. 3 ft B. 4.5 ft C. 2 ft D. 4 ft
Determine whether the statement is true or false.-21 > -14
A. False B. True
Solve the system of equations using substitution. Note that the system may be inconsistent or consistent with dependent equations.
A. (3, 5) B. (5, 3) C. All ordered pairs along 3x + 15y = 9 D. No solution