For the point given in rectangular coordinates, find equivalent polar coordinates 
for 
and 
(-4, -4)
A. (4
, 315°)
B. (-4, 225°)
C. (4
, 225°)
D. (-8, 315°)
Answer: C
Mathematics
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Find the equation of the tangent plane (or tangent "hyperplane" for a function of three variables) at the given point p.
, p = 
A. 20x + 16y - z = 34 B. 20x + 16y - z = 28 C. 2x + y + 28z = 1 D. 2x + y + 28z = 31
Mathematics
Evaluate the integral.
A. 
sec 3x tan 3x + 
ln
+ C
B. 
sec 3x tan 3x + 
+ C
C. 
sec23x tan 3x + 
ln
+ C
D. 
sec 3x tan 3x - 
ln
+ C
Mathematics
Use the square root property to solve the equation.x2 - 19 = 0
A. {
}
B. {-
, 
}
C. 
D. {361}
Mathematics
Provide an appropriate response.For a certain system of two linear equations, the solution set is {-3, -10}, and 
Find the values of Dx and Dy.
A. Dx = -81; Dy = -270
B. Dx = -3; Dy = -10
C. Dx = - 
; Dy = - 
D. Dx = -270; Dy = -81
Mathematics