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What are logarithms?

Logarithms allow us to calculate and manipulate indices in relation to regular numbers. The key thing to remember is that " log x y " begs the question "which power of x gives y ". By thi...
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Answered by Alex M. Maths tutor
3550 Views

When will I ever need to use this in real life?

Maths is something you can make use of for the rest of your life.Obviously, there are a vast number of jobs out there, such as engineering, which use mathematics everyday so if that's the sort of thing that ...
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Answered by Alex M. Maths tutor
3663 Views

Can you please explain the basics of electricity? I can do the maths but I don't understand what 'voltage', 'current' or 'resistance' actually is!

The fundamental unit of electricity is 'charge'. Each electron is slightly negatively charged and it is this movement of charge around a circuit which powers our appliances. The speed of the electrons/the nu...
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Answered by Alex M. Physics tutor
4079 Views

15g of Magnesium is burned, what mass of magnesium oxide is formed ?

Write out the equation when Magnesium is burned to produce Magnesium oxide: 2Mg + O2 > 2MgOMagnesium to Magnesium oxide is 1:12) Work out the number of moles present in 15g of Magnesium: Moles = Mass/Rela...
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Answered by Carlin R. Chemistry tutor
4768 Views

How do I solve the simultaneous equations 5x+2y=11 and 4x-3y=18?

Simultaneous equations have two or more unknown values, in this case there are two: x and y. To solve them, first we need to get one unknown by itself. In order to do this we need the coefficient of either x...
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Answered by Helen T. Maths tutor
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