Find the difference.-13 - (-8)
A. -5
B. -21
C. 21
D. 5
Answer: A
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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. 
= 
; 
= -ex/y
; 
= 
= ex/y
C. 
= 
; 
= 
; 
= 
= 
D. 
= 
; 
= ex/y
; 
= 
= -ex/y
In the illustration, quadrilaterals ABCD and WXYZ are similar rectangles. AB = 25, BC = 20, and XY = 20. Find YZ.
?
?
A. YZ is equal to 15. B. YZ is equal to 16. C. YZ is equal to 15.5. D. YZ is equal to 21. E. YZ is equal to 19.
Solve the problem.Using the following floor plan, find a path that begins and ends in room F and passes through each doorway exactly once.
A. F ? A ? G ? B ? C ? D ? G ? E ? F B. No such route exists. C. F ? E ? G ? B ? C ? D ? G ? A D. F ? A ? G ? D ? C ? B ? G ? A ? F
Use properties of logarithms to condense the logarithmic expression. Write the expression as a single logarithm whose coefficient is 1. Where possible, evaluate logarithmic expressions.log x + log(x2 - 196) - log 3 - log(x - 14)
A. log 
B. log 
C. log 
D. log 