Give the quadrant in which the point is located.(-20, 0)

A. Quadrant III
B. Quadrant II
C. Quadrant IV
D. None


Answer: D

Mathematics

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Find all the second order partial derivatives of the given function.f(x, y) = tan-1 (-3x + 4y)

A. fxx(x, y) = ;
fyy(x, y) = ;
fxy(x, y) = fyx(x, y) = 

B. fxx(x, y) = ;
fyy(x, y) = ;
fxy(x, y) = fyx(x, y) = 

C. fxx(x, y) = ;
fyy(x, y) = ;
fxy(x, y) = fyx(x, y) = 

D. fxx(x, y) = ;
fyy(x, y) = ;
fxy(x, y) = fyx(x, y) = 

Mathematics

Multiply. Be sure your answer is simplified. ? 

A.  
B.  
C.
D.

Mathematics

Solve the problem.Laura's chocolate store is famous for its "Chocnut", a unique mix of chocolate and nuts. A Supreme box of Chocnut has  pounds of chocolate and  pounds of nuts. A Deluxe box has  pounds of chocolate and  pounds of nuts. John bought 2 Supreme boxes and 2 Deluxe boxes of Chocnut. What is the total weight of his purchase?

A. 17 lb
B. 35 lb
C. 21 lb
D. 31 lb

Mathematics

Graph.y ? 

A.

B.

C.

D.

Mathematics