Find the center of mass of a thin plate covering the given region with the given density function.The region between the curve y = 
and the x-axis from x = 1 to x = 9, with density ?(x) = 
A. 
= 5, 
= 
B. 
= 
, 
= 
C. 
= 
, 
= 
D. 
= 
, 
= 
Answer: D
Mathematics
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Find the exact value of x.cos-1 x = csc-1 
A. 
B. 
C. 
D. 
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Simplify using the zero-power rule.-10y0
A. 0 B. 1 C. -10 D. -9
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Solve the system of linear equations.0.6x + 0.1y = -1.5 x - 0.1y = -3.3
A. No solutions B. (-3, 3) C. (-0.3, 0.3) D. Infinitely many solutions
Mathematics
A photograph is to be printed on a rectangle in the divine proportion. If it is 7 cm high, how wide is it, to the nearest centimeter ? ?
A. 23 cm B. 10 cm C. 16 cm D. 13 cm E. 11 cm
Mathematics