The probability that you will guess the first answer correctly  =  1/2  =  0.5
The probability that you will guess the second answer correctly  =  1/2  =  0.5
The probability that you will guess the third answer correctly  =  1/2  =  0.5
The probability that you will guess all three answers correctly is
                (0.5) x (0.5) x (0.5)  =  0.125  =  12.5% .
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Here are all the ways your answer sheet could wind up:
(R = a right answer.  W = a wrong answer.)
W W W 
W W R
W R W
W R R
R W W
R W R
R R W
R R R
Number of possible ways to score 0 right out of 3 questions:  1 way
Number of possible ways to score 1 right out of 3 questions:  3 ways
Number of possible ways to score 2 right out of 3 questions:  3 ways
Number of possible ways to score 3 right out of 3 questions:  1 way
Statistically, if your answers are all pure guesses, 
then on the average, the score you expect is
      (0 + 33-1/3 + 33-1/3 + 33-1/3 + 66-2/3 + 66-2/3 + 66-2/3 + 100) / 8
   =                  400 / 8
   =                      50%  .  
If you're happy with that score, great !  
Go to the movies the night before the test,
and start guessing.
        
             
        
        
        
Answer:
<h2>A. -2x³ - 6x² + 9x</h2>
Step-by-step explanation:

 
        
             
        
        
        
Answer:
C
Step-by-step explanation:
The formula for the area of a trapezoid is:  (height)(sum of parallel lines)
 (height)(sum of parallel lines)  
Thus, the formula in this question would be:  (4)(4+8) which is option C
 (4)(4+8) which is option C 
 
        
             
        
        
        
Your answer would be line DC or a have a nice day!
        
                    
             
        
        
        
Radius=8/2=4cm
volume=4*4*3.14*20=1004.8
The answer is  1004.8cm₃