The figure shows how the yard lines on a football field are numbered. the goal lines are labeled g. a referee was standing on a certain yard line as the first quarter ended. he walked 41
3
4
yards to a yard line with the same number as the one he had just left. how far was the referee from the nearest goal line? express your answer as a simplified mixed number.

the referee was yards away from the goal line before moving.

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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rauschg

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