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This is quite a hard thing to understand at first, but the main difference between both is that compound tenses express an action that has happened before another action, but does not necessarily have to ...

Although Hitler's personality and charisma as an orator played and important role in his appeal and rise to power, they were not solely responsible. Political and economic factors at the time greatly help...

Price elasticity of demand describes how the demand for a good responds to a change in its price. This is calculated by dividing the percentage change in Quantity demanded by percentage change in Price (a...

Conversion of trigonometric functions:

cos(30°) = √3 / 2

tan(60°) = √3

Computing equation with trigonometric substitutions:

12 cos(30°) - 2 tan(60°) = 12 (√3 / 2)...

Calculating the mass of 1 molecule of ammonia:

Mass = ( Number of hydrogen atoms x Mass of hydrogen atom) + ( Number of nitrogen atoms x Mass of nitrogen atoms)

Mass = ( 3 x 1 ) + ( 1...