Find the center of mass of a thin plate of constant density covering the given region.The region between the x-axis and the curve y = 6csc2 x, 
? x ? 
A. 
= 
, 
= 6
B. 
= 
, 
= 9
C. 
= 
, 
= 4
D. 
= 
, 
= 8
Answer: C
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Evaluate the expression.(-4)-1
A. -4
B. - 
C. 
D. 4
Governments often impose _____ to restrict the quantities of foreign products that multinational firms can bring into their countries.
A. stockout rules B. negative tariffs C. quotas D. custom exclusions E. expropriation restrictions
Solve the problem.A rectangular enclosure must have an area of at least 2700 yd2. If 
of fencing is to be used, and the width cannot exceed the length, within what limits must the width of the enclosure lie?
A. The enclosure must have a width between 30 yards and 60 yards inclusive. B. The enclosure must have a width between 60 yards and 90 yards inclusive. C. The enclosure must have a width between 30 yards and 90 yards inclusive. D. Then enclosure must have a width of 30 or fewer yards.
Determine the vertex of the graph of the quadratic function 
a. 
b. 
c. 
d. 
e. 