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The points A and B have position vectors 2i + 6j – k and 3i + 4j + k respectively. The line l passes through both A and B. Find a vector equation for the line l.

First you need to find the vector AB. This is equal to -OA+OB. OA and OB are equal to the position vectors of A and B respectively so -OA+OB= -2i - 6j + k + 3i + 4j + k = i - 2j + 2k = AB Then we can take an...
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Answered by Alex T. • Maths tutor
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Solve the equation x=4-|2x+1|

This type of equation involves a modulus, this the component enclosed in the straight lines, |2x+1|. A modulus takes the absolute value of its contents, this means that regardless of the input you always hav...
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Answered by Benjamin C. • Maths tutor
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Discuss feminism in Mary Shelley's Frankenstein.

It is possible to discuss the topic of Feminism within Frankenstein through Shelley’s female characters and how the female characters are constructed and portrayed. In the novel, women seem to somewhat take ...
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29389 Views

How can Business Studies help me?

Business Studies helps you to make more informed decisions in the everyday business of living. It also gives you a better understanding of the World of Works.
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Explain how the electron pair repulsion theory can be used to deduce the shape of, and the bond angle in, NH3.

Nitrogen has 5 valence electrons in its outer shell. Each Hydrogen has 1 valence electron in its outer shell, so the 3 Hydrogens donate 3 electrons in total. This gives 8 valence electrons in total. We can t...
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Answered by Matthew N. • Chemistry tutor
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