Answer:
(0,0)
Step-by-step explanation:

The mean is all of them added together divided by the number, so multiple the mean by the number of sides, 3, and that's the perimeter. 18 x 3 = 54
Answer:
3 okie
Step-by-step explanation:
Answer:
(x-1) (x+4)
Step-by-step explanation:
Factor x^2+3x-4 using the AC method
The answer is B.
Hope that helps, if you need any more help, just ask : )