Aquadratic equation has a discriminant of 12. which could be the equation?

In a school 2/3 of the students study a language of those who study a language 2/5 study french

What is the range of the relation in the table below? x y –2 0 –1 2 0 4 1 2 2 0

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?