Solve the equation.6x + 9 = x + 54
A. 9
B. -9
C. 
D. 
Answer: A
Mathematics
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Find all the first order partial derivatives for the following function.f(x, y) = 6x - 3y2 - 9
A. 
= -6y; 
= 6
B. 
= -3; 
= -6y - 9
C. 
= 6x; 
= -6y
D. 
= 6; 
= -6y
Mathematics
Write the equation for the plane.The plane through the points P(5, -8, 40) , Q(-3, -6, 58) and R(-1, 6, -34).
A. 7x + y + 4z = -4 B. 7x + y + 4z = 4 C. 4x + 7y + z = 4 D. 4x + 7y + z = -4
Mathematics
Solve the problem.Since cos 
= - 
and 
is in the interval [0, ?], cos-1 - 
=
A. - 
B. 
C. 
D. 27
Mathematics
Write the mixed number as an improper fraction.4
A. 
B. 
C. 
D. 
Mathematics