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if b is two thirds of c. 5a = 4c Work out the ratio a : b : c

So firstly, we need to write the statement "b is two thirds of c" as an equation. This can be written as b=2/3 c. As a ratio this can be written as b:c is 2/3:1 . Now we went to write the equation ...
MT
Answered by Mike T. • Maths tutor
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When do you use er or é at the end of verbs?

When a verb ends with er: it is an infinitive Whereas: when a verb ends with é it is past tense A way to make the difference while writing Is: replace the verb by a 3rd verb group and see if it makes sense. ...
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Answered by Zachary J. • French tutor
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Explain how a reflex arc works using an example

A stimulus is detected by a sensory receptor, e.g. pain detected by a pain receptor when the arm touches a sharp pin etcThis causes a nerve impulse to be created which travels along a sensory neurone to the ...
KS
Answered by Kewin S. • Biology tutor
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What are the Four factors of production?

The four factors of production are Capital, Land, labour and Enterprise/EntrreprenurshipAn easy way to remember this is with the anagram CELL.
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Answered by Gus J. • Economics tutor
4471 Views

Find the derivative of y=arcsinx

To differentiate we must use implicit differentiation. So: siny=x .Differentiating both sides we get (dy/dx)cosy=1, so (dy/dx)=1/cosy . Using the common identity (sin 2 (y)+cos 2 (y)=1) we can rewrite the de...
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Answered by Shivum G. • Maths tutor
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