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The imperfect tense in French describes an action that took place in the past. It is an action with no specified start or end points (an unspecified duration). It could be used for descriptions in the pas...

Make x= Tea and y= CoffeeTherefore 3x + 2y = 7.80 (1) and 5x + 4y = 14.20. (2)Want either x or y to be equal for both equations- therefore make (1) 6x + 4y = 15.60 (3)“Same signs subtract” so do (3) - (2)...

Firstly, it's important to know what each of these words means because they are all techniques used frequently in all kinds of texts (poetry, fictional and non-fiction). It's also useful to be able to rec...

First assess that the initial case of where n = 1 is true. In this case, 6+9=15=53, so we can see that the case is true.We can then assume that 6^k+9 is a multiple of 5, so we can let 6^...