For what real values of x does the expression  figure 1.png)
represent an imaginary number?
 figure 2.png)
 ANSWER 1.png)
Mathematics
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Simplify. Your answer should be in lowest terms.11
- 
A. 10
B. 9
C. 10
D. 11
Mathematics
Solve the problem.Find the moment of inertia Iy of the region of constant density 
bounded by the paraboloid 
and the xy-plane.
A. 
?
B. 4842018?
C. 
?
D. 
?
Mathematics
Solve the problem.The population of a town was 24,300 at the beginning of 1970. If the population decreased by 250 people per year, how many people lived in the town at the beginning of 1985?
A. 20,800 B. 20,300 C. 3750 D. 20,550
Mathematics
The augmented matrix is in row-echelon form and represents a system of linear equations. Solve the system using back-substitution.
A. {(2, 5)} B. {(4, -2)} C. ? D. {(5, 2)}
Mathematics