Answer: 9 tickets
Step-by-step explanation:
 
        
             
        
        
        
7 times of 1/2 cup  = 7 x 1/2 
7 times of 1/2 cup  = 7/2
7 times of 1/2 cup  = 3 1/2 cups.
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The recipe called for 3 1/2 cups of flour
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Answer:
The total mechanical energy is 0.712 J. 
Step-by-step explanation:
A blue 573 g mobile is moving on a metal rail. If on the mobile, the spring exerts a force to the right of modulus 0.85 N and in the indicated position the kinetic energy of the mobile-spring system is 0.47 J and its elastic potential energy is 0.242 J. Determine the mechanical energy of the system mobile-spring in the position shown as indicated in the figure.
The total mechanical energy is given by the sum of the kinetic energy and the potential energy. 
Kinetic energy = 0.47 J 
Potential energy = 0.242 J 
The total mechanical energy is 
T = 0.47 + 0.242 = 0.712 J 
 
        
             
        
        
        
Answer:
The probability of 1 error in a period of 0ne - half minute is 0.1494
Step-by-step explanation:
Formula for poisson distribution:

If there is an average of 1 error in 10 seconds
In one-half minutes (i.e. 30 seconds), there will be an average of 30/10 errors = 3 errors


1! = 1

P(X = 1) = 3 * 0.0498
P(X = 1) = 0.01494
 
        
                    
             
        
        
        
Answer:
its the second  one 
Step-by-step explanation: