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Solve this set of simultaneous equations: 5x+3=3y 9x+9=6y

Firstly, you need to understand that the two equations are interlinked, therefore the x and the y variables are the same values in both equations. To make things easier, we can number both equations. What we...
RJ
Answered by Ryan J. • Maths tutor
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Can non-scientific hobbies add to a person’s ability to be a good student, and why? Can you think of any examples in your own case?

This is a very broad question asked often towards the end of an Oxbridge interview to try and understand if the student is suitable for a degree which will be academically very intense. The interviewer will ...
ML
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What is the function of the waxy cuticle?

It prevents evaporation of water from the leaf to reduce the loss of water
JS
Answered by Josephine S. • Biology tutor
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Name 3 barriers against infection

Any 3 from. Skin. Mucus -in nose, trachea (cilia waft the mucus into the stomach to be destroyed) . Stomach acid. lysosomes (e.g. in tears and saliva)
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Answered by Josephine S. • Biology tutor
2796 Views

How do endothermic and exothermic reactions differ?

Endothermic reactions take in heat from the surroundings, whereas exothermic reactions release heat to the surroundings. Exothermic reactions release heat as the energy released from the bonds being made in ...
ML
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