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The perimeter of a right-angled triangle is 72 cm. The lengths of its sides are in the ratio 3 : 4 : 5. Work out the area of the triangle.

We know the perimiter is split into the proportions 3:4:5 therefore by adding 3+4+5 we can work out what fraction of 72cm each side is.Thus 3/(3+4+5) = 3/12 = 1/4 is the fraction of 72 that belongs to the sh...
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Answered by Sefton d. • Maths tutor
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To what extent does the religion you have studied adequately insist on human beings taking responsibility for the environment?

The chosen religion is Christianity. There are two conflicting Christian approaches to environmental responsibility. Namely, the concepts of stewardship and dominion. Stewardship is the theological belief th...
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Prove cosec2A-cot2A=tanA

Cosec2A - cot2A= tanA Left hand side=1/sin2A - cos2A/sin2A =(1- cos2A)/sin2A =(1-(1- 2 sin^2⁡ A)/ 2sinAcosA =(1-1 + ( 2 sin^2⁡ A))/ 2sinAcosA =sinA/cosA =tanA Therefore left hand side of the equation is equa...
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Answered by Sherin T. • Maths tutor
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3n+2 <= 14 and 6n/(n^2+5) > 1 Find possible values of N

3n+2 is less then or equaled to 14. 6n divided by N squared + 5 is less then 1. First, we are going to deal with the equation on the left. From this equation, takeaway 2 from both sides to get 3n&lt;=12, div...
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Answered by MOHAMMAD A. • Maths tutor
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Define the process of osmosis and diffusion

osmosis is the unprompted movement of water from a high concentration to a low concentration through a semi-permeable membrane diffusion is the movement of particles from an area of high concentration to an ...
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