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Maths Puzzle
Numerical Ability
solve: c^3 + c^2 - 7c - 3 = 0, given root -3
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A CERTAIN BRASS ALLOY CONTAINS 60% COPPER, 34% ZINC, 6%LEAD. HOW MANY KG OFTHIS BRASS ALLOY AND OF ZINC MUST BE ADDED TO 20KG OF LEAD TO PRODUCE A NEW BRASS ALLOY THAT IS 40% ZINC
Identify the shape of the graph, transform it into standard form, and sketch the graph.
y = (2/3)x^2 - 8x + 29