A right triangle is shown.
х
6
8
Enter the value of x.

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?

How many ordered pairs of positive integers satisfy xy=32?

Prove that 16^4-2^13-4^5 is divisible by 11.