She can run 20.5/2.5 equaling 8.2mph
Answer is N/A. There is not a ratio to answer the question.
Yes i believe it is correct
Using Heron's formula:
A = √(p(p-a)(p-b)(p-c)) where a,b,c are the sides of the triangle and p is half the perimeter.
The answer is B. 149.4 square units.
Well, what is the perimeter? Does it tell you what the perimeter is? If not, i can't help:(