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This is an example of a common Mechanics 1 question. I teach a systematic approach to such questions. 

1. Diagram - dram diagram of the pulley set up

2. Label forces on diagra...

Label the equations 1 and 2 We want to make it so the x are the same number - therefore we have to find a common multiple of 2 and 3 - this is 6 Therefore the equations turn into: 1) 6x + 10y = -8 2) -6x ...

We know that 17% is the same as 17/100 or 0.17 so we do 0.17*84 = 14.28.

A typical GCSE question will give you an equation in the from ax² + bx + c, x² - 8x + 15 = 0 for example, and ask you to solve the possible value of X. To do this we need to split th...

There are various ways to solve simultaneous equations. The two easiest are by elimiation and by substitution. By Elimation When solving by elimination you want to ensure that you ...