Answer:
D
Step-by-step explanation:
The centroid of a triangle is the intersection of the three medians of the triangle (each median connecting a vertex with the midpoint of the opposite side).
The Definition of Porcentage is given by:
Where Vx is discounted value or increased, and Vt is total value. The discount decreases the "p" value.

If you notice any mistake in my english, please let me know, because i am not native.
5 is the length of each sides
0.04 (already rounded for you)
Answer:
D: -35
Step-by-step explanation:
Take the sign of the larger which is negative.
subtract 99-64 to get 35.
Add your negative sign to get -35.