Answer:
Step-by-step explanation:
I think you wish is:
6(x - y) = 12
I hope I've helped you.
It is 13,14 because it goes up two then one one then two again which will then mess up the rotation
Exactly 29.7, but you can't have 7/10 of a student so you round to 30. So 30 students are playing a music instrument because 330 times 0.09 is about 30
Answer:

Step-by-step explanation:-
To find the midpoint, the equation we use is:-

x1 = 10
x2 = 5
y1 = 7
y2 = 4
Substituting the values in the equation, we get:-

Coordinates of the midpoint---> 
W-5=5
W= 5+5 (bringing -5 to the other side, it becomes +5)
At last, W=10.