Find the unit rate. Round to the nearest hundredth, if necessary. $1.99 for 19 lb

Find the given elements if matrix d:

Find the value of x for which abcd must be a parallelogram -9-6x x-30

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?