A board that measures 19.5 meters in length is cut into two pieces. One measures 7.2 meters. Write and solve an equation to find the length of the other Piece.

Find two rational expressions that have the difference of 2-n/n-4

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?

Which graph represents the equation y =4x