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Passé composé and imparfait are used when referring to the past tense in French. While both are used to explain an event that happened in the past, imparfait is used in less specific scenarios while passé...

if x and y are in a ratio 3:2 you can write it as 3x=2y so if you are given a value for either you substitute it into this and rearange to get the other value. e.g y = 2 what is x? 3x=2(2) so 4=3x, x=3/4....

(x+a)^2+(y+b)^2=c a is the a negative of the x coordinate of the centre b is the negative y coordinate. c is the seared radius.

3x^2+2x-5=4x-2 3x-2x-3=0 3(x^2-2/3x-1/3)=0 3((x-2/6)^2-4/36-1/3)=0 3(x-2/6)^2-1/3-1=0 x=2/6(+-)(4/9)^-2

Smoking have bad long term and short term effects on a person's health due to the harmful substances in cigarettes. Firstly, it can causes emphysema. This is when the alveoli's bubbly-like shape is reduce...