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When do you use the imperfect and when do you use the preterite?

Trying to differentiate between the use of these two tenses can often prove challenging for Spanish students. However, there are some key points that may help you when trying to decide which tense to use. Th...
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Answered by Summer S. • Spanish tutor
4029 Views

How can algebraic expressions be simplified?

In algebra, long expressions can be simplified which makes them easier to solve. We can simplify alebraic expressions by collecting together "like terms". When looking at an expressions such as: 5x...
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Answered by Fraser M. • Maths tutor
12521 Views

What is the difference between "ce" and "se"?

Nothing can distinguishes se and ce when you hear them. However, they have completely different meanings: - you will always find se (or s' ) in front of a verb e.g.: se souvenir -> to remember. It refers ...
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Answered by Domitille S. • French tutor
19682 Views

Explain how the eye responds to different light levels.

Light is a sensory stimulus detected by the eye. Rods and cones located in the retina of the eye respond to light. The pupillary reflex is responsible for controlling the amount of light hitting the retina. ...
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Answered by Dominic S. • Biology tutor
22271 Views

What does differentiation actually mean?

When you differentiate an equation, you're finding the gradient of its graph.<o:p></o:p> For example, if you differentiate the equation y = x 2 you get a solution dy/dx = 2x<o:p></o:p&gt...
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Answered by Anna C. • Maths tutor
13267 Views