Find the center of mass of a thin plate covering the given region with the given density function.The triangular region cut from the first quadrant by the line y = -x + 6, with density ?(x) = x
A. 
= 
, 
= 3
B. 
= 3, 
= 
C. 
= 
, 
= 
D. 
= 3, 
= 3
Answer: B
Mathematics
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is true for 
.
?
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A. 44,030 B. 22,015 C. 22,066 D. 23,749
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Find the equation of the tangent line to the curve when x has the given value.f(x) = x2 + 5x ; x = 4
A. y = - 
+ 
B. y = 
+ 
C. y = 13x - 16
D. y = -39x - 80
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