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How can a system of two linear equations be solved?

There are, mainly, three ways of doing it easily: Substitution: It consists in modifying one of the equations in such a way that x is expressed in terms of y (or y in terms of x) and then substitute that exp...
PA
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Evaluate the use of supply side policies as a means of controlling UK inflation (30 marks)

Definition: Firstly, one must define supply side policies: requires the aggregate supply curve to move to the right - measuring an increase in the factors of production (eg, land, capital); increase in produ...
EH
Answered by Elliott H. • Economics tutor
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What is the difference between recklessness and intention?

Recklessness and intention are both types of mens rea but are of different levels. Intention is defined in Mohan as 'aim or purpose' and is the the most severe and usually used for higher level crimes like m...
GM
Answered by George M. • Law tutor
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4x-y=3 and 3x-2y=1. Solve these simultaneous equations to find values for x and y.

Equation 1: 4x-y=3 Equation 2: 3x-2y=1 We have to find a common multiple between 4 and 3 so that both equations have the same first value. This means that we can get rid of the x by subtracting the second eq...
JH
Answered by Jami H. • Maths tutor
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What are the adaptations of alveoli to increase gas exchange?

Alveoli are folded to increase their surface area to volume ratio, so more volume of air can diffuse in from the blood and and in from the bronchioles. The lining of the alveoli walls are also moist so the g...
LB
Answered by Lathesha B. • Biology tutor
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