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Discrete Help ASAP. Please write out symbolic notation.? Name a class of annelids whose members may have protonephridia? Number Theory: Find the roots of 4x^2+6x+1 in Z11 (could you please explain step by step? THANKS!)? In one mole of the compound iron(III) oxide,
what fraction of the total number of ions is
the oxygen ion? How many 2 cubic ft. bags of mulch to fill a space that is 30 ft. x 16 ft. x 3 in's deep?