Hat are the solution(s) to the quadratic equation 9x2 = 4? x = StartFraction 4 Over 9 EndFraction and x = StartFraction negative 4 Over 9 EndFraction
x = StartFraction 2 Over 3 EndFraction and x = StartFraction negative 2 Over 3 EndFraction
x = StartFraction 3 Over 2 EndFraction and x = StartFraction negative 3 Over 2 EndFraction
no real solution

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?