The radius of each semicircle in this composite figure is

1 in.
2 in.
4 in.
8 in.

Which expression is equivalent to 5r6141 2r+st6

Which of these numbers of simulations of an event would be most likely to produce results that are closest to those predicted by probability theory? 15, 20, 5, 10

Aball is dropped from a height of 10m above the ground. it bounce to 90% of its previous height on each bounce. what is the approximate height that the ball bounce to the fourth bounce?