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There are 10 boys and 20 girls in a class. The class has a test. The mean mark for all the class is 60. The mean mark for the girls is 54. Work out the mean mark for the boys.

72
CA
Answered by Charlotte A. • Maths tutor
4547 Views

Express 56 as the product of its prime factors

2 3 x 7
CA
Answered by Charlotte A. • Maths tutor
8630 Views

How does Classical conditioning work?

Classical conditioning was studied by Pavlov and focuses on the learning process. Thinking about Pavlov's experiments with dogs, imagine: a dog salivates when he sees food - that is an unconditioned response...
GM
Answered by Goda M. • Psychology tutor
2888 Views

What is the most common word order in the Italian language?

Sentences in Italian are usually ordered according to the SVO (Subject - Verb - Object) structure. The English language also follows the same word order. Consequently, English sentences can easily be transla...
VM
Answered by Valeria M. • Italian tutor
3748 Views

how do i know when to use avoir or etre with a verb in the passe compose?

although there are hundreds of verbs in french, knowing when to use avoir or etre is really easy! there are the 13 main verbs that always take etre, and these can be remembered using the acronym MRS VANDERTR...
TL
Answered by Theo L. • French tutor
11419 Views