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2x + y = 6x - y = 6x = 6 + y => 2(6 + y) + y = 18 => 12 + 3y = 18 => 3y = 6 => y = 2x - (2) = 6 => x = 8x = 8, y = 2

Firstly you should take some time to read the question fully at least 3 times and to circle/underline/highlight what it is asking you to do in order to ensure you fully understand it. Secondly you should ...

There are two reasons: increasing atomic size and increasing shielding effect.
Increasing atomic size - As you go down the Group, the atom size becomes larger, therefore the electron that must be rem...

Cuando Franco ganó la Guerra Civil Española, el país quedó en una posición de retroceso frente a los procesos de modernización de los distintos paises Europeos. Occidente abrió su mente en temas sociocult...

This problem requires us to find out the equation of the tangent line, which has form y=mx+q.M is the angular coefficient or slope of the line and can be evaluated through the derivative of the function ...