Approximate the square root. Round to the nearest tenth, if needed.
A. 15.5
B. 15.2
C. 15.4
D. 15.3
Answer: C
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Find the real solutions of the equation.x4 - 8x3 + 16x2 + 8x - 17 = 0
A. {-4, 1} B. {-4, 4} C. {-1, 4} D. {-1, 1}
Find all square roots of the number.
A. 
, - 
B. 
, - 
C. 
, - 
D. 
, - 
Divide.
A. x3 - 10x2 - 3x + 24 B. x3 + 2x2 - 8x + 24 C. x3 - 3x2 - 10x + 24 D. x3 - 8x2 + 2x + 24
Solve the problem.For a school project, Sue interviewed a total of 100 persons who were either lawyers or salesmen. She asked them if they were happy or unhappy with their occupation. Of the 64 lawyers interviewed, 11 were unhappy, however, only 4 of the salesmen were unhappy. Suppose that one of the persons interviewed is selected at random. Find the probability that the person selected is happy.
A. 0.82 B. 0.85 C. 0.92 D. 0.88