Top answers

How do I solve two simultaneous equations?

Supposing we have two equations x+2y=5 and 3x-y=10 and we want to find x and y we can use the following techinque. Multiply both the RHS and the LHS of the second equation by 2, giving us 6x-2y=20. Then add ...
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Answered by Theano X. • Maths tutor
4491 Views

Explain the process of evolution

Individuals within a population show a wide range of variation due to differences in their genes. The individuals within these species/populations with the characteristics most suited to their environment su...
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Answered by Seyi A. • Biology tutor
3077 Views

How do you find the tangent of an angle in a right-angled triangle?

Divide the length of the opposite side by the length of the adjacent side
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Answered by Lydia W. • Maths tutor
3811 Views

How to work out a fraction of an amount?

The key rule is to divide the amount by the denominator and multiply by the nominator. E.g: 3/5 of 45£ divide by the denominator 45/5=9 multiply by the nominator 9*3=27
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Answered by Augustina B. • Maths tutor
3662 Views

What is the conservation of energy?

Energy comes in many forms (e.g. chemical, potential, kinetic). We say that energy is transferred when it changes from one form to another. The conservation of energy means that in a closed system the amount...
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Answered by Augustina B. • Physics tutor
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