Top answers

Maths
GCSE

How to do simultaneous equations?

  1. 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 ti...
RR
Answered by Rachel R. Maths tutor
7950 Views

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 n...

AM
8806 Views

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...

DI
Answered by David I. Maths tutor
3006 Views

How to find surface area and volume of a cone

Surface area:We know that the base of a cone is a circle, which has a surface area of πr2, where r is the radiusThe rest of the area will be π, r and l (the slanted length) multiplied togetherA...

FF
Answered by Fruzsina F. Maths tutor
3640 Views

The equation of the line L1 is y = 3x – 2 The equation of the line L2 is 3y – 9x + 5 = 0 Show that these two lines are parallel.

In this question, you are being asked to show L1 and L2 are parallel. The equations of two parallel lines will have the same gradient. This is the number in front of the x term in the equation, but to com...

AW
Answered by Abigail W. Maths tutor
4488 Views

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