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Quadrilateral ABCD is a rectangle. If <ADB=2y+40 and <CDB=3y+51, find <CBD? Ammonium carbonate and aluminum sulfate react to yield ammonium sulfate plus aluminum carbonate.? After proteins are made, where are they modified? Rectangle field is 400 meters long and 300 meters wide what is the area in square kilometers? What is the solution of the system of equations?
y = 3x – 4
–3y = –9x + 12?