Sally has 5 bracelets and decides to wear 3 of them to school. How many ways can she choose 3 bracelets if the order she wears them in does not matter?

A.
5
B.
10
C.
60
D.
120

Anyone? 15m is what percent of 60m; 3m; 30m; 1.5 km?

3x = 729 solve for x plz . it's urgent. will mark

Technicians have installed a center pivot, circular irrigator for a farm that covers 25 acres. a.) how long is the irrigation boom (in feet) from the center pivot to its farthest extent? b.) if the irrigation boom makes 4 full revolutions in a day, how many miles does the end of the boom travel in 5 days?