The average mpg usage for 2017 Toyota Prius for a sample of 21 tanks of gas was 45.4 with a standard devotion of 2.3. For a 2017 Ford Fusion, the average mpg usage for a sample of 21 tanks of gas was 43.8 with a standard deviation of 2.1

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?