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When working with probabilities why is it sometimes necessary to add and sometimes to multiply?

Whether you need to add or multiply depends on whether it is a case of 'AND' or 'OR'. For 'AND' you multiply, and for 'OR' you add. Below are examples of each case, using dice as an example: To calculate ...

Answered by Marcus W. • Maths tutor

2918 Views

When do you agree the past participle?

With verbs such as 'aller' and 'venir', the auxiliary verb is être and the past participle needs to agree with the subject.e.g. Il est allé à Paris. Elle est allée à Bruxelles.With most v...

Answered by Oliver B. • French tutor

1840 Views

'The most important reason for the outbreak of a general European war was Germany's 'blank cheque' to Austria-Hungary.' Explain why you agree or disagree with this view of developments in 1914.

The actual question asks whether or not you agree with the quotation. You need to demonstrate knowledge of both sides but must ultimately come to a clear judgement.The quotation refers to Germany's 'blank...

Answered by Oliver B. • History tutor

2876 Views

Give 2 differences between an animal and a plant cell.

Any 2 from: Plant cells have; cell wall (1), large vacuole (1), chloroplast (1) Animals cells are more irregular in shape, plant cells are more rigid and rectangular (1)

Answered by Sarina G. • Biology tutor

2455 Views