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How many milliliters of concentrated of sulfuric acid (18 M) are required to make 7.0 L of 0.12M H2SO4? Could someone help me with these math problems? I can't figure them out. Solve the linear equation;
x+2y=15
y=-2x+0 9x-12y=-3
-12x+16y=4? If x^2+y^2 = 6, and x+y=3, then what is x^3+y^3? W800: How many degrees C° does w800 reach? A partir de qual atividade o homem relacionava-se com o tempo durante o tempo medieval?