A runner 2/3 of a 5 kilometer race in 21 minutes. They ran the entire race at a constant speed. How long did it take to run the
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Most graphing calculators will do weighted averages pretty easily. It is mostly a matter of data entry.
mx = -2
my = 10
(x, y) = (mx, my)/10 = (-0.2, 1)
mx = -2
my = 10
(x, y) = (mx, my)/10 = (-0.2, 1)