Based on the results of the simulation, the experimental probability of a group having four students from the same grade level is %.

Awrestling tournament begins with 128 competitors. in the first round, each competitor has 1 match against another wrestler. the winner of each match moves on to the next round until there is a winner. write a sequence in which the terms represent the number of players still in the tournament at the end of each round. describe the sequence? how many rounds are in the tournament?

Which equation represents the partial sum of the geometric series?

Enter the number of complex zeros for the polynomial function f(x) = x 4+ 5x² +6