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How would you define the concept of Parliamentary Sovereignty?

The most common explanation of the idea of sovereignty comes from Dicey, who saw sovereignty as the idea that Parliament can make or unmake any law it chooses, with unlimited discretion. This means that futu...
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Answered by Iona C. • Politics tutor
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A curve is defined by the parametric equations x=t^2/2 +1 and y=4/t -1. Find the gradient of the curve at t=2 and an equation for the curve in terms of just x and y.

To find the gradient of the curve at t=2 we need to find an expression for dy/dx and then substitute in for t=2. We can make use of the chain rule to find this expression because dy/dx = (dy/dt)/(dx/dt) and ...
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Answered by Steven C. • Maths tutor
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Solve the inequality. x^2 + 2x -15 > 0

To solve the inequality, it must first be factorised. This could be done by the ‘complete the square’ method. However in this example it is more efficient to find a pair of numbers that multiply to give the ...
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Answered by Elizabeth F. • Maths tutor
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What is a food chain we might see in the UK?

A food chain demonstrates what different species of animals present in an ecosystem eat, and are eaten by. The start of the food chain is a producer - an organism which makes food. This is generally a plant,...
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Answered by Caroline T. • Biology tutor
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Describe the formation of a waterfall

As a river moves through its upper course, it creates multiple erosional features such as waterfalls. The river moves over varying rock types, some harder and more resistant to erosion than others. The softe...
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Answered by Jamie S. • Geography tutor
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