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Two equations 1) 5x + y = 21, 2) x - 3y = 9. Eliminate x or y by manipulating equations 1 or 2. Equation 3 = equation 2 x 5 = 5(x-3y) = 5(9) 3) 5x - 15y = 45. Equations 3 & 1 both have 5x's so we can ...

¬(A.B)+A -- given in question. =(¬A+¬B)+A -- using De Morgan's Law. =¬A+¬B+A -- can remove the brackets. =1+¬B -- using identity ¬A+A = 1.=1 -- using identity 1 + anything = 1.

Motivation is the energy or drive that enables people to achieve organisational objectives. Without motivation employees would not be able to use their skills or abilities to achieve organisational goals....

En mi tiempo libre, me gusta hacer muchas actividades. Por ejemplo, siempre he disfrutado practicar la esgrima y para mi es un deporte muy emocionante. Lo practico para mi equipo de universidad y represen...

• define market failure i.e. when free market forces of supply and demand fail to produce the quantities of goods and services at prices which reflect marginal utilities OR fails to opera...