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The important thing is not to panic! It doesn't matter if you don't know or can't remember a specific word given in the passage. The exercise is designed primarily to test your knowledge and usage of gram...
The verb 'to go' is so much more complicated in Russian than in English, but once you know the rules you can easily work out which verb to use in any situation, just by applying logic. Both 'ходить' and '...
Alkenes are a family of hydrocarbons (compounds made up of only hydrogen and carbon atoms) that all share the same chemical formula, similar chemical properties (due to same functional group) and trends i...
To work out how many litres of white and blue paint is needed, use the ratio 3:2. To find the specifc ratio for 18 litres, of paint: 2+3=5, 18/5=3.6 so (3:2)3.6 becomes 10.8:7.2 (check 10.8+7.2=18). S...
First let a = b = x such that:
cos(a + b) = cos(a)cos(b) - sin(a)sin(b)
becomes:
cos(x + x) = cos(x)cos(x) - sin(x)sin(x)
Leading to:
...
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