Top answers

Maths
GCSE

How do you find the mean of 5 values?

As a general rule of thumb, to find the mean of a given set of numbers:

add up all the numbers youve been given and divide by the number of values you have.

e.g.

Find the mean ...

OP
Answered by Olivia P. • Maths tutor
31465 Views

What is solution by substitution?

Simultaneous equations - Solution by substitution

As the variables (x & y) are the same in both equations, we can substitute from one equation into ...

AM
Answered by Antonia M. • Maths tutor
6716 Views

Solve the following simultaneous equations: 4x + y = 14 and 6x - y = 16

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