Answer:
1 D
2 A
3 B
Step-by-step explanation:
b
centroid
x=(x1+x2+x3)/3=(0+3+0)/3=3/3=1
y=(y1+y2+y3)/3=(0+0-3)/3=-3/3=-1
centroid =(1,-1)
Answer: a
Step-by-step explanation: there is no such number
