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An extremophile is an organism that can live in extreme conditions such as high temperatures, high pressures and high acidity. An example of an extremophile is Giant tube worms. They live miles beneath the o...

The definition of acceleration is the rate of which an object's velocity changes. Acceleration = Change in Velocity ÷ Time Therefore, constant acceleration means the object is getting faster or slower at the...

2x + y = 10 (1) 3x + 4y = 25 (2) 1. Eliminate y. Method 1: (1) x 4: 8x + 4y = 40 (1') (1') - (2): 5x = 15 Method 2: Rearrange (1): y = 10 - 2x (1") Substitute (1") into (2): 3x + 4(10 - 2x) = 25 (3...

If you're asked to solve a quadratic equation, you could factorise it, or you could use the quadratic formula. The quickest way is to factorise, but sometimes the numbers are too tricky to factorise, (if an ...

German spelling can be tricky to get to grips with when you first start learning, but there's a simple trick to remembering whether the word you're writing is 'ei' (e.g. 'bleiben') or 'ie' (e.g. 'spielen'). ...