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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
18946 Views

Explain what is meant by a critical path.

The critical path is the path from the start to the end event continuously, with the end of one activity forming the start of the next. There is zero float and the project will be completed in the minimum time.
GC
Answered by George C. • Maths tutor
4008 Views

Can you give an example of using the chain rule for differentiation? Example: Let y=(6 + 2x + 2x^2)^3, find dy/dx.

The chain rule is given by dy/dx= (dy/du)(du/dx). If we set u=6+2x+2x 2 then, y=u 3 thus, dy/dx=(3u 2 )(2+4x) = (3(6+2x+2x 2 ) 2 )(2+4x). Example does not ask to simplify expression or evaluate at any partic...
AH
Answered by Anthony H. • Maths tutor
3956 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
9799 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
3574 Views