1. find the area of the triangle with sides 25, 16, and 20.
a 30.5 square units
b 1993.7 square units
c 159.8 square units
d 494.0 square units

At the newest animated movie, for every 9 children, there are 4 adults. there are a total of 39 children and adults at the movie.

The number if marbles of different colors stored in a hat is listed below: 4 red marbles 10 green marbles 7 blue marbles. without looking in the hat, dan takes out a marble at random. he replaces the marble and then takes out another marble from the hat. what is the probability that dan takes out a blue marble in both draws?

15m is what percent of 60m; 3m; 30m; 1.5 km? the last one is km not m