Evaluate the radical expression if it is a real number. Use a calculator to approximate irrational numbers to the nearest hundredth. If the expression is not a real number, so state.-
A. -100
B. -20
C. -5
D. not a real number
Answer: C
Mathematics
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Find the average of the list of numbers.-17, 2, -9, 3, 12, -5, 7
A. -3 B. 1 C. -1 D. -2
Mathematics
Find all the second order partial derivatives of the given function.f(x, y) = x2 + y - ex+y
A. 
= 2 - y2ex+y; 
= -x2ex+y; 
= 
= - y2ex+y
B. 
= 2 - ex+y; 
= - ex+y; 
= 
= -ex+y
C. 
= 1 - ex+y; 
= - ex+y; 
= 
= -ex+y
D. 
= 2 + ex+y; 
= ex+y; 
= 
= ex+y
Mathematics
Write the product using exponential notation.5 ? 5 ? 8 ? 8 ? 8 ? 8
A. 52 ? 84 B. 5 ? 86 C. 406 D. 25 ? 48
Mathematics
Determine the phase shift of the function.y = 4 cos 
A. - 
B. 4?
C. 
D. -?
Mathematics