exam Maths Puzzle Numerical Ability

1^2 + b^2 = 2 (Pythagorean theorem)

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exam Other Question

rubbing alcohol is typically diluted with water to 70% strength. if you need 3.5 ounces of 45% rubbing alcohol, how many ounces of 70% rubbing alcohol and how much water should you combine? x2-13x+22+0