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Maths
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Frank buys a car at the start of 2015, for £12,000. Each year the value fo the car depreciates by 9%. What was the value of the car at the end of 2019?

The value of the car in 2019 would be £7488.39This is because you take the original value of the car, and multiply it by the multiplier (1.00-0.09)to the power of how many years have passed since the init...

AN
Answered by Amy N. Maths tutor
2430 Views

Jules buys a washing machine. 20% VAT is added to the price of the washing machine. Jules then has to pay a total of £600 What is the price of the washing machine with no VAT added?

Remember that we have two values here, the price of the washing machine BEFORE and the price AFTER the 20% VAT increase. The value AFTER the increase is 600. To get to the value before, you can't simply s...

AI
Answered by Ahmed I. Maths tutor
10274 Views

b is two thirds of c. 5a = 4c Work out the ratio a : b : c Give your answer in its simplest form where a, b and c are integers

a : c = 4 : 5 and b : c = 2 : 3 so getting a common value of 15 for B gives a : c = 12 : 15 and b : c = 10 : 15  we can now compare these ratios and get 12 : 10 : 15 this is not divisible by any common f...

JC
Answered by jamie c. Maths tutor
8017 Views

What is the chain rule?

Up until now you may have been given functions like f(x)= 7x^3 +cos(x) and been told just to differentiate. What your teacher really meant was to differentiate with respect to x. The chain rule allows us ...

JM
Answered by James M. Maths tutor
2991 Views

Find the integral of 4sqrt(x) - 6/x^3.

The easiest way to do this is to break the integral up into it's separate parts. We have:integral of 4sqrt(x)andintegral of -6/x^3
Both of which have constants that can be taken out, i.e. 4 and 6, re...

SP
Answered by Sam P. Maths tutor
2838 Views

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