Add or subtract. Simplify the answer. + 

A.
B.
C.
D.


Answer: B

Mathematics

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Find all the first order partial derivatives for the following function.f(x, y) = x3 - 10x2y - 5xy3

A.  = x2 - 10xy - 5y3 = -10x2 - 5xy2
B.  = 3x2 - 20xy - 5y3 = -10x2 - 15xy2
C.  = 3x2 + 2xy - 5y3 = -10x2 + 3xy2
D.  = 3x2 = -10x2 - 15xy2

Mathematics

Reduce 36in^2 to ft^2

What will be an ideal response?

Mathematics

Find the zeros of f(x), given that one zero is k.f(x) = x3 + 5x2 + 25x + 125k = -5

A. -5, 125i, 25i
B. -, ±5i
C. -5, ±
D. -5, ±5i

Mathematics

Find the equation of the parabola determined by the given information.Focus at (10, -9), directrix y = -17

A. x = y2 + 20- 108 
B. x = y2  
C. y = x2  
D. y = x2 + 27

Mathematics