Top answers

How do I know when to use 'ser' and when to use 'estar' if they both mean 'to be' in English?

This is a really common struggle for people learning and studying Spanish, even at university level. It's understandable because when we want to translate 'to be', for example; I am Naomi, I am friendly, I a...
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Answered by Naomi D. • Spanish tutor
3449 Views

What does this hiragana word mean たべもの

The answer is 'food'. The word is consituted of '食べ' the verb stem of 食べる, to eat, and もの which describes a thing or a physical object as part of this word. Together it literally translates as 'eat' 'thing',...
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Answered by Amelia M. • Japanese tutor
2944 Views

How does the wave of conduction pass through the heart?

Firstly, the 'wave of excitation' is produced by the sinoatrial node (SAN) in the top of the right atrium - this is also known as the pacemaker, as this is what controls the rate of contractions. This wave p...
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Answered by Elisabeth B. • Biology tutor
10569 Views

What is the turning point on the curve f(x) = 2x^2 - 2x + 4

df/dx = 4x - 2 turning point when differential = 0 ==> 4x = 2 hence; x = 0.5 When x = 0.5 f(x) is equal to (substitute) 3.5 hence the turning point is at (0.5,3.5)
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Answered by David T. • Maths tutor
6181 Views

An Island on a map is measured to be 4cm across. The scale of the map is 4cm to 500m. How long is the island in km?

The island is 2km. If the scale is 1cm:500m we need to multiply both left and right sides by 4 to get to the 4cm that was measured. This gets us 4cm: 2000m . We now need to convert 2000m to km which gives us...
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Answered by David T. • Maths tutor
3730 Views