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Henry invest £8000 in youtube at a compound interest rate of 2% per year. He wants to earn more than £500 interest. Work out the least time, in whole years, that this would take?

Each year his money will increase by 2%, meaning he will get 102% of his money from the previous year. This can be written as 1.02. After n years, he will make 8000 x 1.02 n . Calculate this for 1, 2, 3, 4.....
GL
Answered by Gillian L. • Maths tutor
4400 Views

What is the structure of an animal cell?

The main bits of an animal cell are as follows: A nucleus - this is where the genetic material is kept for cell replication and repair Cytoplasm - this is the bit in between the other things in the cell - it...
EJ
Answered by Ellen J. • Biology tutor
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What is eutrophication, and how does it happen?

This is a common topic to come up in exams, often worth many marks. Eutrophication is an ecological process which often occurs when humans are irresponsible with waste products that can end up in bodies of w...
JG
Answered by Jake G. • Biology tutor
3690 Views

When should you use the sine rule and when should you use the cosine rule?

The sine rule can be used when we either know:a) the length of two sides A and B and an angle that is not the corner where A and B meetb) two angles and the length of one side The cosine rule can be used whe...
JB
Answered by Joseph B. • Maths tutor
3618 Views

Why does iodine have a higher boiling point than chlorine?

Iodine and chlorine are both in group 7 of the periodic table, iodine is further down than chlorine. When travelling down the periodic table the size of the atom increases due to the amount of electrons that...
AC
Answered by Abigail C. • Chemistry tutor
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