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Find a basis of the subspace of R4 that consists of all vectors perpendicular to both [1,0,0,7] and [0,1,-9,5]. Please show work!? Can anybody tell me what's the Chaos Theory math equation? How can rates be converted to unit rates? Ho wma y kilometers run after 22 minutes? For what integer value of x is 2x-9<5 and x-1>4?