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A round cake is shared between Abi, Elvira and Tina. The angle cut at the centre of the cake for each piece is that person’s age multiplied by 10. Abi 9 years old and Elvira is 14 years old. How old is Tina?

The cake is in the shape of a circle. How many degrees in a circle? Abi is 9 years old so the angle of her slice is 9 x 10 = 90°, Elvera is 14 years old so her angle is 14 x 10 = 140°. Total angle used so fa...
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Answered by Varun S. • Maths tutor
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What is the enhanced greenhouse effect?

The enhanced greenhouse effect is the stronger impact caused by human emissions of greenhouse gases. Greenhouse gases include carbon dioxide, methane and water vapour and are often produced by burning fossil...
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What is eutrophication and what are its effects?

Eutrophication occurs when excess nutrients, like nitrates and phosphates, enter a body of water. These excess nutrients cause an increase in plant and algal growth in the water, often leading to an algal bl...
IH
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What are the secrets to the A* grade?

The difference between the A* and lower grades in A-Level English - and the following is true for both the exam and coursework - is the ability to do two things: an analysis of techniques of language, struct...
BW
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How can I evaluate a source?

When confronted with an historical source, there are a few easy steps you can take to immediately assess how reliable it is. First of all, you need to decide whether the source is primary or secondary. A pri...
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Answered by Ruby R. • History tutor
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