Answer:
10%
Step-by-step explanation:
Much of this question is missing. We need more info
If we're looking for the type, it would be a right isosceles triangle.
The difference of the heights is 65-45=20 feet, and the length of the ravine is 21 feet. By the Pythagorean Theorem, the length of the zipline is sqrt(20^2+21^2)=sqrt(841)=29.
This system has exactly one solution.
