8y-2x=-72 in slope form

Find |−5|. a. −5 b. 5 c. one-fifth d. –one-fifth !

What is the product of the radical expression. (7-2square root) (8+2 square root)

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?