The middle school band has 56 members. the high school band has 96 members. the bands are going to march one after another in a parade. the director wants the arrange the bands into thre same number of columns. what is the greatest number of columns in which the two bands can be arranged if each column has the same number of marchers? how many band members will me in each column

answer: a video game has three difficulty levels: easy, medium, and expert. the game's scoring works in such a way that a player has to score a fixed number of points to advance to the next level, and then the scoring starts over. the total score needed to clear all three difficulty levels is 7,500. two times the number of points needed to clear the easy level is 500 more than the number of points needed to clear the medium level. twice the number of points needed to clear the medium difficulty level is 1,500 more than the number of points needed to clear the expert level. if x, y, and z represent the easy, medium, and expert levels, respectively, and a is the coefficient matrix of the system of equations modeling this situation, identify the inverse matrix, a-1, and the solution matrix, x, of the system of equations.

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answer: x=3 and y=4

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