Which of the following could be the lengths of the sides of a triangle? a. 1,2,1
b.2,3,1
c.3,5,4
d.7,15,7

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?

For what value of (y) is 3^3/3^y =1/9

Which is f(5) for the function –2x2 + 2x - 3?