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Although they both translate to 'to be' in English, in Spanish we use these two different verbs, and it depends on the quality you are trying to describe. For example, 'estar' is used to describe somethin...

It can be tricky to tell - and sometimes it's even a matter of choice! However, there are some simple rules that you can remember. The passé composé is used for specific events - things that happened, lik...

Think about the x-coordinate and the y-coordinate separately. Starting with the x-coordinate:

1. Find the difference between the two x-coordinates -2 and 8, which is 10.
2. to find the mid...

You see colours due to the length of a wave of light. When a distant galaxy is moving away from us the wavelength increases due to the Doppler Effect (which you may have studied using the sound of a passi...

Step One: Write the first equation and then write the second equation underneath. Label the first equation A and the second equation B. You can now see clearly that each equation contains an x component a...