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What is the Phillips curve?

The Phillips curve, derived by William Phillips in the 1950s, describes the relationship between unemployment and inflation. By plotting annual figures against each other, an inverse relationship was seen to...
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Answered by Neal S. • Economics tutor
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Solve the simultaneous equations for x and y: 2x - 3y + 4 = 0 , x - 2y + 1 = 0.

Simultaneous equations can be solved either by substitution or elimination. Solving this by elimination:2x - 3y + 4 = 0 (1)x - 2y + 1 = 0 (2)To eliminate x, we can multiply both sides of the second equation ...
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Answered by Benjamin R. • Maths tutor
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8 pens in a bag, 3 blue, 5 red. 2 taken out at random, without replacement. Probability they are the same colour?

Either both blue or both red. 'OR' rule - add probabilities.Blue - first blue and second blue - 'AND' rule - multiply probabilities. 3/8 x 2/7 (as not replaced) = 6/56 = 3/28 (multiply top and bottom)Red - 5...
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Answered by Amy S. • Maths tutor
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A-Level question: How is blood glucose regulated?

Blood glucose must be regulated, normal blood glucose for a non-diabetic person is 4.0-5.9mmol. A low blood glucose (sugar) is harmful and a high blood can indicate diabetes. the pancreas and liver and cruci...
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Answered by Erin J. • Biology tutor
3739 Views

What should I put in my Personal Statement?

A Personal Statement is a daunting task- yet it should be much easier than it is made out to be. You need to show what and why you chose the subject that you want to do. The majority of your Statement should...
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Answered by Robert C. • English tutor
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