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What benefits did the First World War bring to the American economy? [4 marks]

America benefited from taking the markets of countries at war and retaining the domestic market after the war. During the war, the US economy boomed due to one-way war trade to European powers. Raw and finis...
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Answered by Sophie B. • History tutor
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Should I include hobbies in my personal statement?

There is no right or wrong answer to this question. You should however only include hobbies (and work experience etc) if you can clearly link it to your chosen subject. Simply stating that you play football ...
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By completing the square, find the solutions of x which satisfy the equation x^2+14x-1=0

Using the general complete the square formula, where x 2 +bx+c=0 becomes (a+b/2) 2 +b 2 +c=0, we get (x+7) 2 -7 2 -1=0 This can be rearranged to show that (x+7) 2 =50 by taking the square root of both sides ...
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Answered by Immie F. • Maths tutor
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A person swims from a depth of 0.5m to 1.7m below the surface of the sea. Denisty Sea Water = 1030 kg/m^3. g=Gravitational Field Strength = 9.8 N/kg. Calculate the change in pressure on the swimmer and give the unit.

Use equation: Pressure = density x depth in the fluid x gravitational field strength. We know the in increase in pressure will be the difference between the Final Pressure (at 1.7m) and the Initial Pressure ...
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Answered by Jack S. • Physics tutor
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integrate (2x^4 - 4/sqrt(x) + 3)dx

simplify: 2x^4 - 4x^(-1/2) + 3integrate each term: (2/5)x^5 - 8x^(-1/2) + 3x + c
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Answered by Benjamin Y. • Maths tutor
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