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We will call sandwiches S and packets of crisps C. These are the 'unknowns'. From the information we can write down two equations. Equation 1: 3S + 2C = 9 and Equation 2: 5S + 6C = 19. We need two equatio...

Firstly, factorise.
(2x + 9) (x - 3) = 0
2x + 9 =0 x-3 = 02x = -9 x = 3 x = -9/2

Pendant mes vacances, je suis allée en Espagne avec ma famille. L’hôtel était magnifique, tout au bord de la mer, et chaque jour j’ai nagé avec mon frère avant de faire la sieste. J'ai adoré la vacance et...

A good example is smoking. Most people know that smoking is bad for their health, however, they still smoke. This separation between beliefs and behaviour is cognitive dissonance. It is often described as...

If d is directly proportional to the square of t, we write this as d= kt² , where k = the proportionality constant which we must find. Substitute in the values given in the question into our e...