Answer:
Perimeter = 11t + 1
Step-by-step explanation:
Perimeter of a triangle = lenght of side 1 + lenght of side 2 + lenght of side 3
Then:
perimeter = (2t-4) + (7t-2) + (2t+7)
perimeter = 2t + 7t + 2t + 7 - 2 - 4
perimeter = 11t + 1
Answer:
9t + 2u + 1
Step-by-step explanation:
You are combining your like terms.
You have:
2t + 7t = 9t
You have:
Only 2u and no other u terms
You have:
-4 + (-2) + 7 = +1
Combine that all together and you have your answer.
