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How do you rearrange x = (2y+1)/(3y+4) to get y in terms of x?

We first multiply both sides of the equation by (3y+4) to get x(3y+4)=2y+1. We then expand the left hand side to get 3xy+4x=2y+1. By rearranging the equation we get 3xy-2y=1-4x. We then factorise the left ha...
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Answered by Ewan R. • Maths tutor
4853 Views

Factorise x^2 - 8x + 12

First we need to draw our two brackets where the terms will go, we set them out like so ( )( ). Now looking at the coefficient of the x squared term, we se that it is one, therefore, it is formed by a multip...
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Answered by Luke S. • Maths tutor
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Solve the linear equation 4x+5=-6x+15

So, students should be able to solve basic linear equations as shown above. The aim in order to solve the equation would be to get all of the x values onto one side of the equation and all of the integers on...
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Answered by Niall H. • Maths tutor
6148 Views

Discuss a use and a harmful effect for three parts of the electromagnetic spectrum

Gamma rays can be used to sterilise medical instruments, however, they can cause cancer.Ultraviolet waves can be used for security on bank notes, however, they can cause sunburn and blindness.Microwaves can ...
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Answered by Oliver E. • Physics tutor
8260 Views

State what is meant by the term covalent bond

Atoms that share electrons due to the electrostatic attraction between the negatively charged pair of electrons and positively charged nuclei.
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Answered by Oliver E. • Chemistry tutor
4497 Views