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solid magnesium cannot flow, but liquid magnesium can. Explain why. (3)

In solid magnesium particles are held together and cannot move past each other. Particles in solid Magnesium vibrate. In liquid magnesium particles can move past each other, the reason being the particles in...
HK
Answered by Hashim K. • Chemistry tutor
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y is inversely proportional to x. When y = 2, x = 3. Work out the value of y when x = 18.

We have that y is inversely proportional to x, which we write mathematically as y ∝ 1/ x. We need to be able to solve this, so we re-write this expression as an equations, y = k/x, where k is the constant of...
LM
Answered by Lauren M. • Maths tutor
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The future tense is an extremely useful tool to explain what you WILL DO in the future; do you know the 6 endings we add to the end of an infinitive to form the future tense?

é - I ás - You (sing.) á - He/she/it emos - We éis - You (plural) án - They
AO
Answered by Alistair O. • Spanish tutor
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How do I solve the simultaneous equations 3x+2y=17, 4x-y=30?

Lets number the equations: 1) 3x + 2y = 17 2) 4x - y = 30If we double equation 2) we will get matching y coefficients so:8x - 2y = 60 if we rearrange this to be 8x-60 = 2y Then if we put these together: 3x +...
VL
Answered by Vicki L. • Maths tutor
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Solve the following simultaneous equations: (1) 2y + x = 8, (2) 1 + y = 2x

The first aim is to obtain an expression for one of the unknowns in terms of the other. To achieve this, addition and subtraction methods are used. For example, using equation 1, subtracting 2y from both sid...
BJ
Answered by Benjamin J. • Maths tutor
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