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Maths Puzzle
Numerical Ability
Explain why -2 is not the solution of the equation 4x + 3x -5 = 27.
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a chemist mixes 10% hydrochloric acid solution with at 20% hydrochloric acid solution. how many milliliters of each should the chemist use to make a 600 ml solution that is 13% hyd
I need help on this problem.
Solve the equation.
5x^2 - 30x + 40 = 0