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Describe and Explain the formation of a waterfall.

Firstly a waterfall is defined as a cascade of water falling from a height over a steep incline or precipice. It is typically found in the upper course of a river and in formed via vertical erosion. They are...
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Answered by Emma Y. • Geography tutor
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Solve the simultaneous equations: 5x + y =21 and x - 3y = 9.

Rearrange x - 3y = 9 to make x the subject by adding 3y to both sides of the equation, giving x = 9 + 3y. Substitute the value of "x" in the second equation for "9 + 3y", giving: 5(9 + 3y...
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Answered by Rebecca S. • Maths tutor
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How should I answer a source-based exam question?

Source-based exam questions typically make up about half of the examined questions at GCSE level History. They can seem pretty challenging and confusing at first, but if you answer them in a structured way y...
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Answered by Imogen K. • History tutor
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Lily is buying theatre tickets. 4 adult tickets at £15 each 2 child tickets at £10 each A 10% booking fee is added to the ticket price. 3% is then added for paying by credit card. Work out the total ticket price if Lily is paying by card?

First we need to find out the price of the tickets without the booking fee and credit card fee.4x15=602x10=2060+20=80 (This is the price of 6 tickets without fees)Now we calculate the booking fee, which is 1...
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Answered by Vaiva P. • Maths tutor
4681 Views

Solve the simultaneous equation: x+2y=8 and 2x+y=10 - using a calculator

Make the x's the same in order to remove the x's from the eqn Multiply eqn (1) by 2 and keep eqn (2) the same to gain 2x+4y=16 and 2x+y=10To get rid of the x's, subtract: eqn (1) - eqn (2)4-1y = 16-10 which ...
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Answered by Robyn W. • Maths tutor
3912 Views