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Of four points are collinear, they are also coplanar

If, while training for a marathon, you ran 60 miles in 2/3 months, how many miles did you run each month? (assume you ran the same amount each month) write your answer as a whole number, proper fraction, or mixed number in simplest form. you ran __ miles each month.

Which coefficient matrix represents a system of linear equations that has a unique solution ? options in photo*