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There are two ways to solve simultaneous equations, by substitution or by addition/subtraction. The simplest solution in this case is a method of substitution:
Rearrange the simplest equation to get ...

13 x 8 = 1048 x 10 = 800.5 x 10 x 12 = 60
SA = 104 + 104 + 80 + 60 + 60 SA = 408 cm2

No problem! Finding things to say is tricky, especially under test conditions. The first thing we need to do is go through the tick-list of what needs including- an introduction and conclusion, and roughl...

Before we begin to answer this question we need to have a clear idea of what a prime number is: A prime number is a number greater than 1 that cannot be found by multiplying 2 smaller numbers. To answer t...

Hi, that's a good question! The key is to make a good plan before you start writing. First highlight key points in the question in order to make sure you know exactly what the question is asking you. This...