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Mathematics, 10.10.2019 02:00 savanah111
The social studies teacher wants to know whether the students in the entire school prefer a model united nations activity or a student government activity. the teacher draws a random sample from the following groups:
all teachers in the school
all boys in each grade
all students in each grade
all students in the social studies club which group best represents the population he should take a random sample from to get the best results for his survey?
all teachers in the school
all boys in each grade
all students in each grade
all students in the social studies club
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Answers: 2
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Given the system of equations presented here: 2x + 4y = 14 4x + y = 20 which of the following actions creates an equivalent system such that, when combined with the other equation, one of the variables is eliminated? multiply the second equation by â’4 to get â’16x â’ 4y = â’80 multiply the second equation by â’1 to get â’4x â’ y = â’20 multiply the first equation by 2 to get 4x + 8y = 28 multiply the first equation by â’1 to get â’2x â’ 4y = â’14
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The social studies teacher wants to know whether the students in the entire school prefer a model un...
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