Without solving, determine the character of the solutions of the equation in the complex number system.4x2 - 8x + 4 = 0
A. a repeated real solution
B. two unequal real solutions
C. two complex solutions that are conjugates of each other
Answer: A
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Use the empirical probability formula to solve the exercise.The table below represents a random sample of the number of deaths per 100 cases for a certain illness over time. If a person infected with this illness is randomly selected from all infected people, find the probability that the person lives 3-4 years after diagnosis.
A. 
B. 
C. 
D. 
Place the correct symbol, < or >, in the blank between the whole numbers.25 
29
A. < B. >
Solve the problem.A sample of 400 grams of radioactive substance decays according to the function 
where t is the time in years. How much of the substance will be left in the sample after 20 years? Round your answer to the nearest whole gram.
A. 1 g B. 0 g C. 33 g D. 243 g
Solve for x.
= 6x
A. - 
B. 0 or - 
C. 0 or 
D. 