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How do I get those top grades in English? As and A*s?

The difference between English GCSE and English at A level is the volume of independent learning. This means taking an active approach to your essays and further reading surrounding the texts at A level. Exa...
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John and Tom take a test. John scores p marks. Tom scores three times what John scored. Their total score is 188. What was Tom's score?

We want everything in terms of p so that there is only one unknown variable.If Tom scored 3x what John did, Tom scored 3 x p. This can be written as 3p.Their total marks are 188 so p (John's marks) + 3p (Tom...
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Answered by Sara S. • Maths tutor
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What are the properties of ionic compounds?

As you may know, ionic compounds are composed of electrostatic forces of attraction between oppositely charged ions. This means that there are no free moving ions in the compound, as they have all been bonde...
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Answered by Shan H. • Chemistry tutor
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How do you prove by contradiction the irrationality of surds. Use sqrt 2 as an example.

Proof by contradiction works by working of the assumption a statement is true, then showing it contradicts with a known truth. It's easy to rote learn the main ones required for Maths A Levels (irriationalit...
Answered by • Maths tutor
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What is the power-house organelle in the cell?

the mitochondria
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Answered by Jessica O. • Biology tutor
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