Answer:
Step-by-step explanation:
I think its 18.24 because if you multiply it by 3.14 then subtract u should get 18.24
To answer this problem, one way is to use the calculator and add directly the two numbers and get the average between the two. The answer is 25/77. We can also get this number by getting the LCM of the denominators which is 77. 2/7 is equal to 22/77 while 4/11 is equal to 28/77. 0.5*(22 +28) is equal to 25. Hence the answer is 25/77.
You would need to leave the dentist at 2:40.