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Solve the simultaneous equations: 3x+2y=11, 2x-5y=1.

Step 1) Label Equations 1) 3x+2y=11 2) 2x-5y=1 Step 2) Multiply so that one variable has same coefficient in both equations. 1)x5 15x+10y=55 2)x2 4x-10y=2 Step 3) Add/Subtract equations to remove one variabl...
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Answered by Harry B. • Maths tutor
5865 Views

Factorise x^2 + 4x +3

First take the 4x - the two numbers that will be +/- to the x in the brackets will need to add to form this number, so the possibilities are 1 and 3 or 2 and 2.Now take the 3 - the two numbers that will be +...
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Answered by James S. • Maths tutor
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Describe el uso del color rojo en las películas de Almodóvar.

Mientras que el color rojo tiene un uso estético en las películas de Almodóvar (como está presente en casi todas las escenas), también actuar como un presentimiento que tanto el público como el personaje en ...
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Answered by Aasiya S. • Spanish tutor
5039 Views

How do you deal with remembering all the knowledge required for organic chemistry questions?

You should organise your knowledge by separating synthetic routes into categories, for example: drawing the synthetic pathways of benzenes separately to those of phenols. You should then make posters or flas...
KR
Answered by Kess R. • Chemistry tutor
3730 Views

Describe what happens when a nerve impulse arrives at a synapse.

A synapse is a junction between a neurone and the next cell. When an action potential arrives at the presynaptic membrane, voltage-gated calcium ion channels open. Calcium ions (Ca2+) diffuse into the synapt...
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Answered by Sophia G. • Biology tutor
10153 Views