Decide whether the system has one solution, infinitely many solutions, or no solution. Justify your answer. Y=5x-1 10x=2y+2

21 type the correct answer in the box. use numerals instead of words. if necessary, use / for the fraction bar. the solution set of n2 - 14n = -45 is { (separate the solutions with a comma)

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How can you find the mean absolute deviation (mad) for this set of data?