Help does anyone know a lot about higher index radicals and solving them? I don't understand how to solve with the variables. I don't know whether to put them inside or outside of the root, and I don't understand which power to put them to. Someone please, please help. It would be greatly appreciated.

Kayla wants to find the width, ab, of a river. she walks along the edge of the river 65 ft and marks point c. then she walks 25 ft further and marks point d. she turns 90° and walks until her location, point a, and point c are collinear. she marks point e at this location, as shown. (a) can kayla conclude that δ and δ are similar? why or why not? (b) suppose de = 15 ft. what can kayla conclude about the width of the river?

What is the ratio of the length of an object in yards to the length of the same object in miles?

Use circumcenter theorem to solve for the given values