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How to do simultaneous equations?

Give the student an example question.e.g: past paper question from OCR (higher tier) paper 4 2017 Each week Dan drives two routes, route x and route y. One week he drives route x three times and route y twic...
RR
Answered by Rachel R. • Maths tutor
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The value of a new car is £18000. The value of the car decreases by 25% in the first year, and 12% in each of the next 4 years. Work out the value of the car after 5 years.

In the 1st year the car loses 25% of its value, meaning it retains 75% of its value. The starting value (100%) was £18000, so multiplying this by the 75% retained - remembering to change this to decimal nota...
AM
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Maths C1 2017 1. Find INT{2x^(5) + 1/4x^(3) -5}

INT{2x 5 + (1/4)x -3 -5} = (2/6)x 6 + (1/8)x -2 -5x + c =(1/3)x 6 + (1/8)x -2 -5x + c
AK
Answered by Arbnor K. • Maths tutor
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What's the key to solving simultaneous equations?

With simultaneous equations, a lot of the maths GCSE qualification, the best approach is to work things out step by step and write every step you take down on your exam paper. This does seem like its time co...
DI
Answered by David I. • Maths tutor
3528 Views

How would you work out the equation of the normal at a point (2,5) given the equation of a line?

You are given the equation of a line in the form of y=mx+c. From this, you know that 'm' represents the gradient, which can also be represented as dy/dx. We now need to work out the gradient of the normal li...
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Answered by Rohil C. • Maths tutor
3985 Views