find the square root at 3600 using prime factorisation method by which number we should multiply to make it as a perfect cube​

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 angle of a triangle are given as 6x,(x-3), and (3x+7). find x then find the measures of the angles

In a singing competition, there are 150 participants. at the end of each round, 40% of the participants are eliminated. how many participants are left after n rounds?