Dividing the number of tires that should be installed per day which  is 400 by the number of working hours which is 8 will give us 50 tires per hour. Assuming that the same mistake will take toll on the workers such that they will have 1 tire mistakenly installed in an hour, they will have 8 erroneous tires in a day. Multiplying this by 5 to make the answer per week will give 40. Out of the 400 x 5  = 2000 tires. The answer would be 2000 - 40 which is equal to 1940. The assumption must be valid. 
        
                    
             
        
        
        
Answer:
10 + 5xy  = -80
Step-by-step explanation:
10 + 5xy = ?
x = 9 and y = -2
10 + 5xy = 10 + 5(9)(-2)
              = 10 - 90
              = -80
 
        
             
        
        
        
Answer:
6
Step-by-step explanation:
2x + 7 = 19
      -7     -7
2x = 12
12/2 = x
6 = x
 
        
             
        
        
        
A straight line on a coordinate plane always represents a function would be true.
        
                    
             
        
        
        
D) 1\9 because it has zero X
B) 5
A) the difference is that 1/9 has zero X and 4\9 and 5\9 have the highest which is 4
B) 4