)the class boundary between two consecutive classes is
a. the difference of their lower class limits divided by 2
b. the average of their upper class limits
c. the difference of their class midpoints divided by 2
d. the middle point between them
e. the difference of their upper class limits divided 2
f. the average of their lower class limits
g. none of the above.

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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

rauschg · hand

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answer: i literally just answered this question but they want me to do it again

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