Add or subtract. Assume all variables represent nonnegative real numbers.6
- 3
- 
A. 15x
B. 2x
C. 14x
D. 3x
Answer: C
Mathematics
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Find all the second order partial derivatives of the given function.f(x, y) = ex/y
A. 
= 
; 
= ex/y
; 
= 
= -ex/y
B. 
= 
; 
= 
; 
= 
= 
C. 
= 
; 
= -ex/y
; 
= 
= ex/y
D. 
= 
; 
= ex/y
; 
= 
= -ex/y
Mathematics
Solve the problem.A searchlight is shaped like a paraboloid of revolution. If the light source is located 5 feet from the base along the axis of symmetry and the opening is 14 feet across, how deep should the searchlight be?
A. 0.9 ft B. 12.3 ft C. 2.5 ft D. 9.8 ft
Mathematics
Factor when possible.3y3 - 6y2 - 45y
A. (y - 3)(3y2 + 15) B. (3y2 + 9y)(y - 5) C. 3y(y + 3)(y - 5) D. 3y(y - 3)(y + 5)
Mathematics
Find the value for the function.Find f(-3) when f(x) = x2 + 5x - 5.
A. -11 B. 29 C. -1 D. 19
Mathematics