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What case do you use when you want to say you don't have something?

In Russian, when you want to say you don't have something you need to use the construction у меня нет + genitive case when talking in the present tense. For example, when your teacher asks if you have a dict...
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Answered by Louisa K. • Russian tutor
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Solve the simultaneous equations: x+y=2 , 4y²-x²=11

These equations would best be solved using the substitution method, in this case the easiest way would be substituting x. For the first equation we need to rearrange it to get x on one side so we have x=2-y....
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Answered by Waris P. • Maths tutor
6780 Views

Equations

Ran through the 3 different types of GCSE equations
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Answered by Oscar M. • Maths tutor
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Why are enzymes called catalysts if they are proteins and not chemicals?

A catalyst refers to many types of different molecules or chemicals which can r educe the activation energy of a reaction without being used up itself. Activation energy is the minimum energy required for a ...
MV
Answered by Meghna V. • Biology tutor
5520 Views

How would you answer a frequency tree question such as '400 people were asked if they drink orange juice, 8/10 say yes, 25% of these say yes to drinking 3 cups a day. Complete the frequency diagram.'?

There are a total of 400 people, therefore to work out how many people said yes you would need to divide 400 by 10 which would equal 40 then times 40 by 8 which comes to 320. To establish how many people sai...
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Answered by Megan C. • Maths tutor
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