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A right angled triangle has two short sides of lengths 5cm and 12cm respectively. What is the length of the third side?

13cm. Using Pythagoras theorem a^2 +b^2 =c^2 we substitute our two known lengths into the equation to get 5^2 + 12^2=c^2. So now we have c^2= 25+144. So c^2 =169. So c=√169 = 13. Don't forget the units!!! So...
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Answered by Niall C. • Maths tutor
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How can I maximise my performance and efficiency in an exam?

Confidence in your mathematical ability and subsequent answers in an exam is key. During an exam you should be confident with the answers that you are giving which can be achieved with steady revision and at...
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Answered by James S. • Maths tutor
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How do you approach a question when you first receive it and then go about planning an essay?

Underline key words, ie. if the question is 'What is the significance of women in Of Mice and Men ?' you would underline 'what', 'significance', 'women' and 'Of Mice and Men'. This allows you to keep on task...
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Answered by Sofia S. • English tutor
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'A sterile interlude'. How valid is this judgement on the reign on Mary I?

The 20th century scholar A. F. Pollard used the term 'sterile interlude' to describe Mary Tudor's reign. Pollard's thesis specifically meant that Mary's reign was an unproductive interruption to a Protestant...
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Answered by Liam L. • History tutor
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What is the definition of Osmosis?

Osmosis is the movement of water molecules from an area of high concentration to an area of low concentration through a selectively permeable membrane.
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Answered by Stuart R. • Biology tutor
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