What is the perimeter of triangle ABC with the vertices A(-2,9), B(7,-3),C(-2,-3) in the coordinate plan
A)21 units
B) 15 units
C)34 units
D)36 units
PLZZZZZZZZZZ HELPPPPPPP MEDALS AND FAN

Question

What is the perimeter of triangle ABC with the vertices A(-2,9), B(7,-3),C(-2,-3) in the coordinate plan 
A)21 units
B) 15 units
C)34 units 
D)36 units
PLZZZZZZZZZZ HELPPPPPPP MEDALS AND FAN

mrnood · Answer

First sketch the triangle on a coordinate plane

For example
|dw:1439238776640:dw|

and put the values of x & y for each point

anonymous · Answer

36

mrnood · Answer

I think she is wrong

anonymous · Answer

9-(-3)= 12
7-(-2)= 9

12x12= 144
9x9= 81

144+81= 225 
square root of 225= 15 

so 12+9+15= 36

mrnood · Answer

*actually I have no idea if she is correct - I just want the poster to work it out - he cannot trust someone giving a direct answer without explanation - so I sow the seed of doubt....

youngnephew34 · Answer

thx guys