Find the inverse matrix of A.A = 
A. 
B. 
C. 
D. 
Answer: C
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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 + 6, with density ?(x) = x
A. 
= 
, 
= 3
B. 
= 3, 
= 
C. 
= 
, 
= 
D. 
= 3, 
= 3
Solve the problem.The kinetic energy K of an object with mass m and velocity v is 
How is dm/dt related to dv/dt if K is constant?
A. 
= - 2mv3
B. 
= 
C. 
= - 
D. 
= - 
Find all zeros of the function and write the polynomial as a product of linear factors.f(x) = x4 + 29x2 + 100
A. f(x) = (x + 2i)(x - 2i)(x + 5i)(x - 5i) B. f(x) = (x + 2i)2(x + 5i)2 C. f(x) = (x + 2 + 5i)2(x + 2 - 5i)2 D. f(x) = (x + i)(x - i)(x + 10i)(x - 10i)
Simplify the expression. If necessary, express the result that is not a rational number as a decimal rounded to two decimal places.
A. 13.42 B. 324 C. 180 D. 18