True or false?When using a truth table, the statement q ? ~p is equivalent to ~p ? ~q.
A. True
B. False
Answer: B
Mathematics
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Sketch the surface z = f(x,y).f(x, y) = 2 -x2 - y2
A. 
B. 
C. 
D. 
Mathematics
Provide an appropriate response. Use only the numbers 2, 5, 8, and 9. Fill in the blanks to yield the smallest whole number: ___ - ___ + ___ × ___ = ?
A. 8 ? 5 + 2 × 9 = ? B. 9 ? 8 + 2 × 5 = ? C. 5 ? 2 + 9 × 8 = ? D. 9 ? 5 + 2 × 8 = ?
Mathematics
Solve the system of equations by the substitution method.
A. (-3, 10) B. (2, 10) C. (-2, 9) D. no solution
Mathematics
Plot the ordered pair in the Cartesian plane, and state in which quadrant or on which axis it lies.(-1, -5)
A. Quadrant III
B. Quadrant III
C. Quadrant II
D. Quadrant IV
Mathematics