Match each system of equations to the inverse of its coefficient matrix, A^-1and the matrix of its solution, X.

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?

The sum of the reciprocal of a positive number and the reciprocal of 2 more than the number is 3/4 equation: the number is

Which coefficient matrix represents a system of linear equations that has a unique solution ? options in photo*