A = -6
b = 48
Hope this helps :)
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:
It is 9
Step-by-step explanation:
If the top and the bottom are the same, (shown in the larger model), then the top and bottom in the smaller model should be the same, which gives me 9.
Good luck!