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What if math rules didn t exist? Does Fe3+ react with MnO4- why or why not? If yes what would be the equation? One number is 4 less than a second number. Twice the second number is 19 more than 3 times the first. Find the two numbers.? If F1(x) is the inverse of F(x), what is the value of F1(F(x)) ? 0, 1 , x-1, or x ?? HELPP PLEASE !!!!? Why was there no sun and a reddish moon from 1pm onwards in the UK today? Is it a curse or alien invasion?