Mathematics, 25.05.2021 06:10 egyptforrest9892
A principal orders t-shirts and wants to check some of them to make sure they were printed properly, he randomly selects 7 of the 10 boxes and checks 20 in one box and 40 in others. What type of sample is this? (It's not random sampling btw)
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Find the number of positive three-digit even integers whose digits are among 9, 8, 7,5, 3, and 1.
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Write a function for a rotation 90 degrees counter clockwise about the origin, point 0
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