I need help I'm really behind (click on the photo to make it bigger)

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?

Graph the system of equations. {6x−4y=−244x−8y=−32 use the line tool to graph the lines.

Write 37/22 as a decimal rounded to the nearest hundredth.