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A family go into a shop, they buy three sandwiches and two packets of crisps. It costs them £9. Another family buy five sandwiches and six packets of crisps. It costs them £19. How much does two sandwiches and five packets of crisps cost?

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 equations ...
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Answered by Sharmi S. • Maths tutor
3375 Views

Find all solutions to the equation: 2x^2+3x-27=0

Firstly, factorise. (2x + 9) (x - 3) = 0 2x + 9 =0 x-3 = 02x = -9 x = 3 x = -9/2
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Answered by Sharmi S. • Maths tutor
1849 Views

Give an account of a recent holiday. Give details and your opinion of the holiday.

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 j’...
KR
Answered by Katie R. • French tutor
2713 Views

What is meant by cognitive dissonace?

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 me...
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Answered by Hannah N. • Psychology tutor
2483 Views

A ball, dropped vertically, falls d metres in t seconds. d is directly proportional to the square of t. The ball drops 45 metres in the first 3 seconds. How far does the ball drop in the next 7 seconds?

If d is directly proportional to the square of t, we write this as d= kt 2 , where k = the proportionality constant which we must find. Substitute in the values given in the question into our equation to get...
KL
Answered by Katie L. • Maths tutor
22639 Views