Find the sum.- 9
+ 17
A. 7
B. 7
C. 25
D. 26
Answer: A
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Solve the problem.Find the centroid of a hemispherical shell having outer radius 9 and inner radius 2 if the density varies as the square of the distance from the base.
A. 
= 0, 
= 0, 
= 
B. 
= 0, 
= 0, 
= 
C. 
= 0, 
= 0, 
= 
D. 
= 0, 
= 0, 
= 
Use the method of your choice to find all real solutions of the equation.
x2 - 
x = -1
A. 
B. 
C. 
D. 
Solve the problem.One fifth of Mary's earned income is deducted from her paycheck for withholdings. Three fourths of the withholdings are for taxes. What fraction of Mary's earned income is deducted for taxes?
A. 
B. 
C. 
D. 
Find the maximum or minimum value of the given objective function of a linear programming problem. The figure illustrates the graph of feasible points. 
Objective Function: z = x + 8yFind maximum.
A. maximum: 20 B. maximum: 34 C. maximum: 42 D. maximum: 27