Decide whether the equation is conditional, an identity, or a contradiction. Give the solution set.9k - 45 = 3(3k - 16)
A. Conditional; {3}
B. Contradiction; ?
C. Conditional; {-3}
D. Identity; {all real numbers}
Answer: B
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Find the center of mass of a thin plate covering the given region with the given density function.The region bounded by the parabola y = 4 - x2 and the x-axis, with density ?(x) = 2x2
A. 
= 0, 
= 
B. 
= 0, 
= 
C. 
= 
, 
= 0
D. 
= 0, 
= 
Solve the problem.The ellipse 
+ 
= 1 is shifted horizontally and vertically to obtain the ellipse
+ 
= 1.Find the foci of the new ellipse.
A. (5, -14), (5, 18) B. (-14, 5), (18, 5) C. (-10, 5), (14, 5) D. (5, -10), (5, 14)
Factor out the GCF from the polynomial. If the GCF is 1, write prime.11x4 + 11x
A. 11x(x3) B. 11(x4 + x) C. 11(x5 + 1) D. 11x(x3 + 1)
Simplify the radical expression. Assume that all variables represent positive real numbers.
A. 4
B. 1
C. 2
D. 