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Two planes leave an airport at the same time, one flying east, the other flying west. the eastbound plane travels 20 mph slower. they are 1600 mi apart after 2 hr. find the speed of each plane.
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Mathematics, 22.06.2019 00:00
Idon't get undoing if its pass adding and subtracting so can someone ? x-2 over 5 = 18
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Determine k 4x^2-2x+k^2-2k+1=0β...
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