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How do you structure an essay to meet all of the assessment objectives?

Firstly, read the question a couple of times and highlight key words such as 'explain' or 'compare' to familiarise yourself with what you are being asked to do. Write some of your first initial thoughts when...
KM
2035 Views

Solve these simultaneous equations: 2x + 3y = 19 and x + 4y = 17.

By multiplying everything in equation 2 by 2, you get 2x + 8y = 34. If you then subtract equation 1 from this you get 5y = 15. Thus y = 3, going back to equation two, and subbing y back in, x + 12 = 17, ther...
JH
Answered by James H. • Maths tutor
4255 Views

Find the equation of the straight line that is tangent to the curve 2x^2 - 5x - 3 =0 when x = 3.

First differentiate 2x 2 - 5x - 3 to get 4x -5. At x = 3, the gradient of the tangent must be 7, and we know it goes through (3, 0) Plug the values into y = mx + c to get the equation of the line, which is y...
SL
Answered by Sarah L. • Maths tutor
3330 Views

Work out 7/(2x^2) + 4/3x as a single fraction in its simplest form.

7/2x 2 + 4/3x = 21/6x 2 + 8x/6x 2 = ( 8x + 21 ) / ( 6x 2 )
CK
3738 Views

Explain how Pumped-storage hydropower (PSH) can store energy.

The system consists of 2 reservoirs at different elevations, where the water can flow between them but through a hydroelectric power station. The higher elevation reservoir releases its water at higher energ...
CK
Answered by Chris K. • Physics tutor
4118 Views