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A circle is touching a square. The area of the square is 64 cm^2. Work out the area of the circle.

The first step of looking at a question like this is to highlight all the important information in the question. We are told that the square has an area of 64 cm 2 so what can we infer about the square based...
JM
Answered by James M. • Maths tutor
18747 Views

Solve x^2 - 5x - 14 = 0

This is an example of a quadratic equation which we can solve on of two ways as it takes the form ax^2 + bx - c = 0a = 1, b = -5, c = -14 (1) Factorisation which we can do ourselves OR (2) Use the quadratic ...
JB
Answered by Jessica B. • Maths tutor
9499 Views

Solve algebraically: 1) 6a + b = 16, 2) 5a - 2b = 19

Firstly multiply the first equation by 2 resulting in the equation 12a + 2b = 32. Following this, add the first equation to the second equation, this will result in the 2b cancelling out with just 17a = 51. ...
AS
Answered by Andrew S. • Maths tutor
3508 Views

How to solve a simultaneous equation?

In simultaneous equations, at this level, you are often given two equations both containing an x and a y. For example:Equation1: y + 2x = 3Equation2: 4y + 2x = 8.The first step in approaching this is to try ...
SB
Answered by Sophie B. • Maths tutor
4220 Views

The exchange rate between dollars and euros(€) is €1 = $1.158 . (a) Felicity changes €4900 into dollars. Work out how many dollars she receives.

4900*1.158=5674.2/1Felicity receives $5670 (to 3sf)
AT
Answered by Alejandra T. • Maths tutor
5542 Views