Question: The scores of 20 students in a math test were: 85, 90, 78, 88, 92, 89, 85, 86, 91, 89, 85, 88, 83, 90, 92, 88, 85, 90, 89, 87. What is the mean, mode, median, range, and average of the scores?
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What is the result of adding the vectors (3, -2) and (-5, 9)?
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What is the resultant vector when a vector of magnitude 5 is added to a vector of magnitude 8 in the opposite direction?