Answer:
Divide 63/9=7
7*2= (the number of teachers) 14
There are 14 teachers for 63 students.
Answer:time spent on your phone is independent and how much studying you get done is dependent since it depends on how much time your spend on your phone as to how much studying you will get done
78.74 divided by 12.7 is equivalent to 7874 divided by 12.70, 78.74/12.7=7874÷1270=6.200 calculating 3 decimle places