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How do I solve simultaneous equations graphically? e.g (1) 4x - 3y = 11 (2) 3x + 2y = 4

Firstly, let's rewrite each of these equations as the equation of a line i.e. in terms of y. So we have: (1) y = 4x/3 - 11/3 (2) y = 2 - 3x/2 Draw line (1) on a graph. The (x,y) co-ordinates of any point on ...
DL
Answered by Daniel L. • Maths tutor
4154 Views

What are Stem Cells?

Stem cells are (pluripotent) undifferentiated cells that can differentiate into specialised cell types / tissues. Future medical uses involve growing organs from a patients OWN stem cells = zero chance of re...
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Answered by Sophie P. • Biology tutor
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Try to translate this sentence into English: 我每天都跑步。我喜欢在早上跑步，夏天也喜欢游泳。

I jog everyday. I like to run in the morning, I like to swim during summer.
MK
Answered by Michelle K. • Mandarin tutor
3648 Views

Jodie buys 12 cans of cola. There are 330 ml of cola in each can. Rob buys 4 bottles of cola. There is 1 litre of cola in each bottle. Rob buys more cola than Jodie. How much more?

The answer is: (4X1000)-(12X330)= 40, ao 40 ml more. You may wonder why 1 litre is 1000, as 1 litre of cola= 1000 ml of cola so we have to convert 1 L to 1000ml in the anwer. Rob buys more cola than Jodie me...
MK
Answered by Michelle K. • Maths tutor
3946 Views

What is Le Chatelier's Principle?

By defintion, Le chatelier's principle states that if a reaction at equilibrium (i.e a reversible reaction) is subject to a change in concentration, pressure or temperature the system will act in a way to co...
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Answered by Rebecca C. • Chemistry tutor
5612 Views