Write the rational expression in lowest terms.
A. 
B. 
C. -1
D. 1
Answer: B
Mathematics
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Find all the second order partial derivatives of the given function.f(x, y) = ex/y
A. 
= 
; 
= 
; 
= 
= 
B. 
= 
; 
= ex/y
; 
= 
= -ex/y
C. 
= 
; 
= -ex/y
; 
= 
= ex/y
D. 
= 
; 
= ex/y
; 
= 
= -ex/y
Mathematics
Evaluate the expression or indicate that the root is not a real number.-
A. -312 B. -25 C. 25 D. Not a real number
Mathematics
Convert the units.27 yards = 
feet
A. 972 B. 243 C. 324 D. 81
Mathematics
Find a value of ? in [0°, 90°] that satisfies the statement. Leave answer in decimal degrees rounded to seven decimal places, if necessary.sin ? = 0.81107642
A. 54.2012343° B. 125.798766° C. 35.7987657° D. 234.201234°
Mathematics