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In the 1st year the car loses 25% of its value, meaning it retains 75% of its value. The starting value (100%) was £18000, so multiplying this by the 75% retained - remembering to change this to decimal n...

INT{2x⁵ + (1/4)x^-3 -5} = (2/6)x⁶ + (1/8)x^-2 -5x + c =(1/3)x⁶ + (1/8)x^-2 -5x + c

With simultaneous equations, a lot of the maths GCSE qualification, the best approach is to work things out step by step and write every step you take down on your exam paper. This does seem like its time...

You are given the equation of a line in the form of y=mx+c. From this, you know that 'm' represents the gradient, which can also be represented as dy/dx. We now need to work out the gradient of the normal...

Surface area:We know that the base of a cone is a circle, which has a surface area of πr², where r is the radiusThe rest of the area will be π, r and l (the slanted length) multiplied togetherA...