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8/5-5/x divided by 5/6+4/x^2? What two variables are needed to describe a normal curve? (Statistics)? Controversial question of the day: Should people have the right to die? 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!? Could someone please help me find the LCD of this rational expression as well as the solution? 4/(x+1)+1/x=15/(2x)?