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How do you calculate the hypotenuse of a right angle triangle if the two shorter sides are 6 and 8?

As this is a right angle triangle, we need to use Pythagoras's Theorem. This says that the length of the longest side of a right angle triangle (the hypotenuse) is equal to the sqaure root of the sum of the ...
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Answered by Rebecca V. Maths tutor
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why does log a + log b = log (ab)

Let log a be some number A and log b be some number B now the natural log of something is the equivalent of saying a=e^A and b = e^B So a*b = e^A * e^B which by rules of indices = e^(A+B) Therefore log(ab) =...
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Answered by Rebecca V. Maths tutor
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Explain why an enzyme catalyses only one reaction.

Enzymes only have one active site which is only complementary to one specific substrate.
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Answered by Luckksha L. Biology tutor
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Define the term ‘derived demand’

The demand for a good or service reulting from or leads to the demand for another good or service.
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Explain the formation of limestone pavement.

Limesone is a calcium carbonate and when rainwater mixes with carbon dioxide in the atmosphere it becomes weak carbonic acid. Calcium carbonate is soluble in this acid and thus causing the process of carbona...
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