Solve the system of equations (only real solutions) by the elimination method. Check your solutions.
A. {(2, 1), (1, 2)}
B. {(1, 0), (-1, 0)}
C. {(2, 0), (-2, 0), (1, 0), (-1, 0)}
D. {(2, 1), (-2, -1), (1, 2), (-1, -2)}
Answer: D
Mathematics
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Find the center of mass of a thin plate covering the given region with the given density function.The region bounded by the curves y = ± 
and the lines x = 1 and x = 9, with density ?(x) = 
A. 
= 3, 
= 0
B. 
= 2, 
= 0
C. 
= 5, 
= 0
D. 
= 4, 
= 0
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Provide an appropriate response.If an item sells for $1.85 and is marked up 40% on the selling price, then the cost of the item is $1.11.
A. True B. False
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Provide the proper response.Prepare a table showing the percent and decimal equivalents for these fractions: 
, 
, 
, and 
.
What will be an ideal response?
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Simplify the radical.- 
A. -6 B. 36 C. 10.645 D. not a real number
Mathematics