Find the requested partial derivative.
if 
and 
.
A. 3(x2 + y2 + z2)
B. 18(x2 + y2 + z2)
C. 18x2
D. 3x2
Answer: D
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Express the rational number as a terminating or repeating decimal number.
A. 0.857142
B. 0.
C. 0.857
D. 0.
Solve the equation by the square root property. If possible, simplify radicals or rationalize denominators. Express imaginary solutions in the form 
2 = 
A. 
B. 
C. 
D. 
If a triangle has vertices of 
and 
then the area of the triangle is given by 
Find the area of the triangle with vertices at the given points.(-3, 5) (2, -4) (4, -1)
A. 16.5 B. 13 C. 6.5 D. 33
Solve the problem.The roof of a building is in the shape of the hyperbola 
where x and y are in meters. Determine the distance, w, the outside walls are apart, if the height of each wall is 8 m.
A. 58 m B. 7.6 m C. 15.2 m D. 8.4 m