Answer:

Step-by-step explanation:
The coordinates of A = (2,9)
The coordinates of B = (7,4)
Let M (x,y) be the mid point of A and B.

So, the coordinates of mid point of A and B is
.
Domain is the left and right values, which means any parabola opening up or down will have a domain of (-∞, ∞)
Answer: 31.57
Step-by-step explanation: 17.55 + 14.02 =31.57