exam
Maths Puzzle
Numerical Ability
Factor completely 125x^6+x^3
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A hair dye is made by blending a 7% hydrogen peroxide solution and a 4% hydrogen peroxide solution. How many milliliters of each are used to make a 300-millilter solution that is 5% hydrogen peroxide?
6. Machine trades- For the crankshaft, AB=4.2 in., and the connecting rod AC= 12.5 in. Calculate the size of angle A when the angle at C is 12 degrees.