Find the prime factorization of the number. write the result using exponents 1. 245

The hawaiian alphabet has 12 letters. how many permutations are posible for each number of letters?

If 10 men take 18 days to mow 60 acres of grass, how long will 15 men take to mow 80 acres?

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?