Multiply and simplify.-6z ? 
A. 0
B. 36z
C. 1
D. -1
Answer: C
Mathematics
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Solve the system of equations.
A. x = 0, y = 0, z = 1 B. x = 3, y = 1, z = 0 C. inconsistent (no solution) D. x = 0, y = 1, z = 0
Mathematics
Write in scientific notation.0.000000064309
A. 6.4309 × 10-9 B. 6.4309 × 10-8 C. 6.4309 × 10-7 D. 6.4309 × 108
Mathematics
Find the axis of symmetry of the given function.f(x) = - 11x + x2 + 8
A. x = 
B. x = - 
C. x = 11
D. x = 
Mathematics
Find the second-order partial derivative.Find fxx when f(x,y) = 8x3y - 7y2 + 2x.
A. -14 B. -28 C. 48xy D. 24x2
Mathematics