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Outline 3 reasons why girls tend to achieve more highly than boys in education (6 MARKS)

Girls may achieve better due to having more positive role models in schools, 86% of teachers in primary schools are female, so from a young age, girls see that they can achieve highly, subsequently giving th...
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Answered by Chloe K. • Sociology tutor
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The curve C has equation 2yx^2 + 2x + 4y - cos(πy) = 45. Using implicit differentiation, find dy/dx in terms of x and y

2x 2 y + 2x + 4y - cos(πy) = 45Applying implicit differentiation:4xy + 2x 2 (dy/dx) + 2 + 4(dy/dx) + πsin(πy)(dy/dx) = 0Moving all (dy/dx) terms to one side:2x 2 (dy/dx) + 4(dy/dx) + πsin(πy)(dy/dx) = -4xy -...
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Answered by Prahlad M. • Maths tutor
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Find the integral of [ 2x^4 - (4/sqrt(x) ) + 3 ], giving each term in its simplest form

We begin by rewriting it in a more workable form: 2x 4 - 4x -1/2 + 3. Indices are easier to integrate than fractions.Now, we integrate each term separately. The first term is 2x 4 . We increase the power of ...
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Answered by Prahlad M. • Maths tutor
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Express the following in partial fractions: (x^2+4x+10)/(x+3)(x+4)(x+5)

(x^2+4x+10)/(x+3)(x+4)(x+1) = A/(x+3) + B/(x+4) + C/(x+1) [A(x+4)(x+1) + B(x+3)(x+1) + C(x+3)(x+4)]/(x+3)(x+4)(x+1) = (x^2+4x+10)/(x+3)(x+4)(x+1) [A(x+4)(x+1) + B(x+3)(x+1) + C(x+3)(x+4)] = (x^2+4x+10) A(x^2...
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Answered by Alessandro S. • Maths tutor
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Describe how oxygen in the air reaches capillaries surrounding alveoli in the lungs. Details of breathing are not required. (AQA Biol. 2016)

Oxygen diffuses from the air where it is present at a higher concentration and pressure, to the lungs where it is at a lower concentration and pressure - we say it moves 'down' these gradients; high to low. ...
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Answered by David M. • Biology tutor
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