Answer:
Step-by-step explanation:
s=18, t=18 the s gives t x sweets
s=18-x, t=18+x, s eats 5 and t eats half
s=18-5-x, t=(18+x)/2
Reamining sweets is
R=s+t
R=18-5-x+(18+x)/2
R=13-x+(18+x)/2
R=(26-2x+18+x)/2
R=(44-x)/2
Answer:
A) The coordinates of the fourth vertex are:
1) x-coordinate:

2) y-coordinate:

B) The point of intersection of the diagonals is: 
Step-by-step explanation:
We need to remember that the diagonals of a parallelogram intersect each other at a half-way point and the midpoint of each diagonal is the same.
The midpoint formula is:

Since:

We can find the coordinates of the fourth vertex
through these procedure:
1) x-coordinate:

2) y-coordinate:

Therefore, fourth vertex is
Since the point of intersection of the diagonals is the midpoint of a diagonal (Remember that
), this is:

Therefore, the point of intersection of the diagonals is 
The answer is 8.031 per person