Each matrix is nonsingular. Find the inverse of the matrix. Be sure to check your answer.
A. 
B. 
C. 
D. 
Answer: A
Mathematics
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Find the center of mass of a thin plate of constant density covering the given region.The region in the first and fourth quadrants enclosed by the curves 
and 
and by the lines 
and 
A. 
= 
, 
= 0
B. 
= 
, 
= 0
C. 
= 
, 
= 0
D. 
= 0, 
= 
Mathematics
Solve the problem.The number of mosquitoes M(x), in millions, in a certain area depends on the June rainfall x, in inches: 
What rainfall produces the maximum number of mosquitoes?
A. 8 in. B. 256 in. C. 0 in. D. 16 in.
Mathematics
Write the fraction and mixed number as a percent.5
A. 53% B. 5.3% C. 530% D. 0.53%
Mathematics
Write the equation of the line with the given slope and y-intercept.slope 
;y-intercept (0, -3)
A. y = 
x + 3
B. y = 
x - 3
C. y = - 
x - 3
D. y = - 
x + 3
Mathematics