Solve the problem.For the space curve x = t, y = t2, z = t , find the points at which the function f(x, y) takes on extreme values if fx = 81, fy = 
, and fz = 180t.
A. t = 0
B. t = -18 and t = -20
C. t = -9 and t = -10
D. t = - 
and t = - 5
Answer: C
Mathematics
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Provide an appropriate response.(a) Graph the curves r = 
and r = 
.(b) Find polar coordinates of the points of intersection of the curves in part (a).(c) Show that at the points of intersection the tangent lines to the curves are perpendicular to each other.
What will be an ideal response?
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Round the whole number to the given place value.40,785,268, millions
A. 40,785,000 B. 40,000,000 C. 40,800,000 D. 41,000,000
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Find x:
-20 ÄÄÄ = 2 5x a. x = -2 b. x = 4 c. x = -10 d. x = -14 e. x = 20
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Use a double-angle identity to find the exact value of the expression.
A. 
B. 
C. 
D. 
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