Evaluate the determinant.
A. -9
B. -1451
C. 42
D. -4
Answer: B
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Solve the problem.A dome is in the form of a partial sphere, with a hemisphere of radius 20 feet on top and the remaining part of the sphere extending 10 feet to the ground from the center of the sphere. Find the surface area of the dome to the nearest square foot.
A. 3770 ft2 B. 38 ft2 C. 37,699 ft2 D. 377 ft2
For the compound inequality, give the solution set in both interval and graph forms.-2b + 4 < 10 or -2b + 4 ? 18
A. (3, 7]
B. (-?, -7] ? (-3, ?)
C. [-7, ?)
D. (-?, -3)
Perform the indicated operation(s). Simplify if possible.
+ 1
A. 
B. 
C. 
D. 
Provide an appropriate response.The amount of potential energy V (arbitrary units) stored in a compressed spring is given by V = 0.09x2, where x is the distance in millimeters the spring is compressed beyond its equilibrium point. Graph the equation using values of x of 2, 4, 6, and 8 mm.
A. 
B. 
C. 
D. 