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Probability: These 6 coins are in a box - 10p, 10p, 10p, 20p, 20p, 50p. Someone takes 2 coins at random. What is the probability that the total value of the two coins is at least 40p?

The question has a number of important points which should be highlighted before beginning. Firstly the fact that the picks are at random. Secondly that the value of the coins must be at least 40p, so a tota...
TP
Answered by Tom P. • Maths tutor
9008 Views

How would I go about finding the coordinates minimum point on the curve eg y = e^(x) - 9x -5?

In order to find the coordinates of the minimum point of any curve y = f(x), you must differentiate the equation of the curve with respect to x and then equate it to zero.In this case, the differential of th...
TR
Answered by Theo R. • Maths tutor
4229 Views

How is the human body used in Wilfred Owen's poem 'Mental Cases'?

The human body is broken down in 'Mental Cases' and is detached from the soldiers. Owen dehumanises the men, to better establish how the horror of the First World War is impacting them. He compares them to s...
CW
Answered by Callum W. • English tutor
4553 Views

What gives rise to antibiotic resistance?

Key points VARIATION: A population of bacteria aren't all identical, even having all derived from a single bacterium. Rapid genetic exchange gives rise to mutations. SELECTION PRESSURE: By adding the selecti...
AS
Answered by Aman S. • Biology tutor
3266 Views

What are the methods of calculating depreciation?

There are 2 ways in calculating depreciation: Straight Line method and Reducing Balance method. Straight Line method is simple to calculate ( (cost of the asset - Residual value) / Useful life ). When calcul...
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Answered by Faizan A. • Accounting tutor
2623 Views