Find the solutions to the system of equations by the addition method.5x - 
y = 242x + 
y = 
A. (4, 2)
B. (5, 2)
C. (6, 1)
D. (-5, 1)
Answer: B
Mathematics
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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 + 3, with density ?(x) = x
A. 
= 
, 
= 
B. 
= 
, 
= 
C. 
= 
, 
= 
D. 
= 
, 
= 
Mathematics
Add or subtract the rational expressions. Reduce to simplest terms.
+ 
A. 1
B. 
C. 
D. 
Mathematics
Identify where f is increasing and where f is decreasing.f(x) = 
A. increasing: [-4, ?); decreasing: (-?, -4] B. increasing: (-?, 4]; decreasing: [4, ?) C. increasing: (-?, -4]; decreasing: [-4, ?) D. increasing: [4, ?); decreasing: (-?, 4]
Mathematics
The solution of 
is
Select the correct answer.
?
A. 
B. 
C. 
D. 
E. 
Mathematics