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Firstly, to expand the brackets, we can use the FOIL method to multiply them out.First - multiply the first numbers of each bracket. 3x * 4x = 12x^2Outer - multiply the outer numbers of each...

if you are looking at a far away object, your eyes don’t need to refract the light too much in order to focus it onto the retina. So in this case the lens shape should be flat instead of fat. And how this...

Total wage each week= £420. In one week, he saves 15% of this: 15% of 420 is 0.15 x 420 = £63. So he saves £63 in one week. To calculate the total number of weeks it takes to save up for the phone, divide...

Earthquake hazards generally occur on or near specific types of tectonic plate boundary; they are the result of a build-up of stress between two tectonic plates that is released when the plates move past ...

Throughout the play, Mrs Birling is presented by Priestley as a character with few redeeming personality traits. She is firstly described as 'a rather cold woman' in the opening text. Priestley continued ...