Step-by-step explanation:
(-1,0),m=2
(1-7),m=12
m=-4,(-1,-4)
Answer:
Perimeter = 19.6 cm
Area = 9.3 cm squared
Perimeter: Add sides: 3.1 + 9.3 + 7.2 = 19.6
Area: 9.3 x 2 x 1/2 = 9.3
A-Either the mean or median; both are 8
