Answer:
Two lines or shapes that lie exactly on top of each other. Example: these two lines are coincident, only you can't see them both, because they are on top of each other.
Step-by-step explanation:
24 divided by 6 plus 9 subtract 3 divide 2 =5
The area of D is given by:

The average value of f over D is given by:
The answer is 35/6. Hope you get it!
The answer to this question is 1.88888888889 or rounded to 2.0