Answer:
3x - 13
Step-by-step explanation:
The perimeter is just the distance around the triangle. We have all three sides, so we can just add them together to get the total distance.
(x-6) + (x+2) + (x-9)
Group:
x + x + x - 6 + 2 - 9
3x - 13
Answer:
2458
Step-by-step explanation:
20% of 60 is 12
60/300 = 20%
The friend is incorrect because that is 20% of 300 not 60