exam Maths Puzzle Numerical Ability

a mountain climber is scaling a 400-foot cliff.the climber starts the bottom at t=0 and climbs at a constant rate of 124 feet per hour.use the slope and y-intercept to write the li

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What three techniques can be used to solve a quadratic equation? Please could you demonstrate all three techniques using the following equation. Thanks!

12x^2 - 10x - 42 = 0 Rubbing alcohol is typically diluted with water to 70% strength. If you need 3.5 oz of 45% rubbing alcohol, how many ounces of 70% rubbing alcohol and how much water should you combine?