Decide which of the 5 properties of a commutative group (closure, identity, inverse, associative, commutative) hold for the given system.
A. All of them
B. Closure, identity, and inverse only
C. Closure only
D. Closure, identity, inverse, and associative only
Answer: D
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Use scientific notation to solve the problem.If the speed of light is 3.00 x 108 m/sec, how long does it take light to travel 2.29 x 1011 m, the distance from the sun to Mars?
A. 7.6 x 102 sec B. 7.6 x 103 sec C. 76 sec D. 7.6 x 102 min
Solve the problem.The shape and density of a thin shell are indicated below. Find the moment of inertia about the z-axis.Shell: portion of the cone x2 + y2 - z2 = 0 between z = 2 and z = 3Density: ? = 1
A. Iz = 
?
B. Iz = 65?
C. Iz = 65
D. Iz = 
Determine the period of the given function.y = 3 cos x
A. ?
B. 3
C. 2?
D. 
If the sides of a triangle are a, b, and c and they satisfy a2 + b2 = c2, the triangle is a right triangle. Determine whether the triangle with the given sides is a right triangle.a = 12, b = 16, c = 20
A. Yes B. No