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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 ...

Answered by Olivia P. • Maths tutor

25035 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 ...

Answered by Antonia M. • Maths tutor

5494 Views

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

First, write out the equations beneath each other:

4x + y = 14

6x - y = 16

Then, label the equations a and b (let's take the top one as a, and the bottom one as b)

Answered by Rebecca S. • Maths tutor

6950 Views

How to determine the number of unique real roots of a quadratic equation.

Take any quadratic equation, eg/ 3x²+4x-2=5, and rearrange to equal 0, ie/ 3x²+4x-7=0 ...

Answered by Yaniv P. • Maths tutor

20328 Views

What is Pythagoras's theorem?

For any right-angled triangle, the square of the hypotenuse (the side opposite the right angle) is the sum of the square of the remaining two sides.

Answered by Bhavika M. • Maths tutor

4150 Views

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