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Remember that we have two values here, the price of the washing machine BEFORE and the price AFTER the 20% VAT increase. The value AFTER the increase is 600. To get to the value before, you can't simply s...

To form the simple future tense in Spanish, you have to take the infinitive of the verb you want to conjugate (for example 'escribir' or 'viajar' and then add on the appropriate ending. These are the endi...

a : c = 4 : 5 and b : c = 2 : 3 so getting a common value of 15 for B gives a : c = 12 : 15 and b : c = 10 : 15  we can now compare these ratios and get 12 : 10 : 15 this is not divisible by any common f...

Every enzyme has a unique shape. They have a region called the 'active site' where a substrate can bind. This site of the enzyme is a particular shape and only substrates that fit this site exactly can bi...

Bacteria can mutate and this mutation can make them resistant to an antibiotic. Treating this infection then means that only the non-resistant strains of bacteria will be killed. The resistant bacteria wi...