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How can I use a plan to help me write an essay?

The first, and perhaps most important, step is to 'deconstruct' the essay question. Essentially what you need to do is find 'the heart' of the question, this will usually allude to a certain thesis that you ...
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Answered by Halima N. • English tutor
2322 Views

If z=4+i, what is 1/z? (in the form a+bi)

1/z =1/(4+i) Multiply both top and bottom by the complex conjugate, z* = 4 - i, 1/z = (4-i)/((4+i)(4-i)) = (4-i)/(16+4i-4i-i 2 ) = (4-i)/17 ans: 4/17 - i/17
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Anouk, Beth and Carlin share £48 between them. Beth gets 3/8 of the money. Anouk and Carlin share the remaining money between them, by the ratio 3:2. How much money does Carlin get?

Beth gets: £48 x 3/8 = £18 The remaining money is: £48 - £18 = £30 ( Alternate method: £48 x 5/8 = £30. This eliminates the need for the first step) The ratio is 3:2 so this is the same as fractions of (3+2=...
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Answered by Rachel H. • Maths tutor
3848 Views

When do we use haben and when sein with the perfect.

As a general rule, verbs that in the present have an akkusative object form the perfect with haben. The rest with sein. For example: The table breaks = Der Tisch bricht. [ Subject Nominative: tisch, verb: br...
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Answered by Antonis T. • German tutor
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A truck with mass 1200kg is moving at 8m/s when it collides head-on with a stationary car of mass 800kg. As they collide, the vehicles move together with the same velocity, v. Calculate this velocity.

Momentum is conserved. MU + mu = (M+m)v (1200 x 8) + (800 x 0) = (1200 + 800)v 9600 = 2000v v = 9600/2000 = 4.8m/s
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Answered by Rachel H. • Physics tutor
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