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Both alkanes and alkenes are hydrocarbons, meaning they are made up of hydrogen and carbon only. However, alkanes are saturated hydrocarbons consisting of single bonds only whereas alkenes are unsaturated...

So first you need to recognise that you are able to take 2x out of both the numerator and denominator of the fraction:(72x3 - 18x)/(12x2 - 6x) = 0 ---> (2x (36x² - 9))/ (2x (6x - 3)) = 0 ,...

Ser and Estar are two verbs in spanish which both mean 'to be', but they have very different uses and therefore, are not interchangeable.Ser = permanent i.e. used to express an inherent quality or charact...

Usually, possessive adjectives agree with the noun that comes after them. For example, we would say 'mon frère' for 'my brother', but 'ma soeur' for 'my sister'. However, when a feminine wor...

It's best to think of these two verbs as completely separate in Spanish even though they both translate as 'to be'. SER You should keep in your mind that this is for more 'permanent' thingse.g. D<...