Gets brainliest! 11pts! sam wants to predict who will be selected as the seventh-grade student council representative. which of the following groups should sam survey to make his prediction? one hundred random students from the seventh grade one hundred random students from the entire school the first 100 students from an alphabetical list of seventh graders the first 100 students from an alphabetical list of the entire school

The answer is A One hundred random students from the 7th grade.

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$35.59 in pounds

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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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