Whats x value please help

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?

If you have 12 feet of string and you cut it into equal length of 5 inches each how much string will be left

Which statement accurately describes how to perform a 90° clockwise rotation of point a (1,4) around the origin?