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y is inversely proportional to d^2 and when d = 10, y = 4. d is directly proportional to x^2 and when x = 2, d = 24. Find a formula for y in terms of x. Give your answer in its simplest form.

Firstly, find proportionality equation between the two variables. This should be shown as d = kx^2 and y = b/d^2.Solve to find constants of proportionality of a=6 and b=400. Eliminating for d, find that y...

Answered by Jiangying (Susan) C. • Maths tutor

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How would you differentiate between the hypotenuse, opposite and the adjacent in a triangle?

Firstly, in a right angled triangle, the side opposite the right angle is always the hypotenuse which is the longest side in a right angle triangle. Secondly, the side opposite the given angle is your opp...

Answered by Jenny C. • Maths tutor

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What is the equation of the tangent of the circle x^2+y^2=25 at the point (3,4)

GraphFirstly, if not drawn for you it would be best to draw the graph which is given to you (in this case you should notice is a c...

Answered by Alireza A. • Maths tutor

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Factorise the equation x^2 + 5x+6 = 0

(x+3)(x+2)

Answered by James W. • Maths tutor

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What is the point of bearings?

Imagine you want to sail a ship from Liverpool to new York. While sailing you will need to know precisely what direction you need to be travelling at every point(if you are out by one degree this could re...

Answered by Jamie S. • Maths tutor

3087 Views