Solve the problem.Find the equation for the tangent plane to the surface 
at the point 
A. 2x + y + 30z = 33
B. 20x + 20y - z = 38
C. 20x + 20y - z = 30
D. 2x + y + 30z = 1
Answer: C
Mathematics
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Identify the type of surface represented by the given equation.
+ 
= 
A. Ellipsoid B. Hyperbolic paraboloid C. Paraboloid D. Elliptical cone
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Solve.
x = - 
A. - 
B. - 
C. - 
D. - 
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Solve the problem.Round 275 to the nearest ten.
A. 290 B. 270 C. 380 D. 280
Mathematics
Find the exact value by using a half-number identity.sin 
A. 
B. 
C. 
D. 
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