Find the perimeter of this sector. Give your answer in simplest form in terms of Pi.
Radius is 8cm.

At which value in the domain does f(x) =0?

3382-299=3383- ? fill in the blank?

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?