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I don't understand how functions work. How do I decide if something is a function?

There is a definition which a pairing between to sets has to satisfy in order to be a function. It is like a checklist, we can go over it and tick each box to see if something is a function.

First ...

ZV
Answered by Zsolt V. Maths tutor
5663 Views

Explain why Russian serfs were granted their freedom in 1861

Tsar Alexander II of Russia signed the declaration abolishing serfdom in 1861 for a number of reasons, all of which combined to create a situation in which the system of serfdom became untenable in Russia...

EC
Answered by Elizabeth C. History tutor
3204 Views

What is the Working Memory Model

The working memory model is a framework put forward by Alan Baddeley to describe how human's store and manipulate information they are currently working with. In it's original form it outlined an executiv...

LB
Answered by Liam B. Psychology tutor
3784 Views

Write about the ways Seamus Heaney uses nature in at least one poem

Seamus Heaney utilises nature frequently in his poems as a vehicle for wider themes. Heaney typically refers to the nature that surrounded him as a child, using the memory of his surroundings to explore e...

EC
Answered by Elizabeth C. English tutor
10493 Views

A car costs £300. The price is then reduced by 20%. However, the shop increases the new price by 15%. Fadhila says, "20 - 15 = 5, so the original price of the car has been reduced 5%". Is she right? What is the final price of the car?

Fadhila is wrong. To work out price increases/decreases we need to multiply the original price by a decimal number. A reduce by 20% means multiplying by 0.8: we need to take away 20% of the original numbe...

ET
Answered by Emma T. Maths tutor
4241 Views

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