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A new car costs £12,000. It decreases in value by 5% each year for the first 5 years and then increases in value by 2% after that. How much does it cost after 7 years?

12,000 x 0.95^5=9285.37 7-5=2 9285.37x1.02^2=9660.50

MP
Answered by Matilda P. Maths tutor
2950 Views

How can temperature affect an enzymes activity?

An enzyme is a biological catalyst. As temperature is raised, the rate of the reaction increases up to the optimum temperature, the point at which the enzyme works the best. Beyond this, raising the tempe...

MS
Answered by Mahnoor S. Biology tutor
1699 Views

A large amount of sewage enters a river and many of the fish die. Sewage contains bacteria and organic material. Explain why the fish died.

Bacteria in the water decay organic matter in sewage -> respire aerobically -> uses the O2 in the water and reduces O2 concentration -> fish have less O2 to aerobically respirate -> fish die

CH
2517 Views

Solve algebraically the simultaneous equations, x^2 + y^2 = 25 and y – 3x = 13

First you need to pick a variable to solve for( irrelevant which one is picked) so I will choose to solve y first as in this question it is easier (as y has no coefficient). So make y the subject of the s...

BU
Answered by Benjamin U. Maths tutor
2704 Views

How would I answer a question asking me to describe two theories of population growth?

So one theory is the Malthusian theory which was first discussed by Thomas Malthus in 1798 when Malthus became concerned about rapid population growth. He came up with a theory focusing on food availabili...

WL
Answered by Whitney L. Geography tutor
2230 Views

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