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Factorise 12x^2 - 20x + 3

We know our answer is going to look like this: (ax + b)(cx + d). First we can split our original equation in order to make it easy to simplify. As we know that 12 multiplied by 3 is equal to 36 we can split ...
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Answered by Emma G. • Maths tutor
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Identify and explain one Functionalist perspective the functions of the family. (4 marks)

According to the Functionalist Murdock, the family fulfills 4 key roles which enables society to function adequately. The first function is reproduction, meaning that heterosexual parents reproduce their own...
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How does the body respond to a rise in temperature?

A rise in body temperature will be detected by the thermoregulatory centres in the hypothalamus. When the core body temperature exceeds 37 degrees C the blood vessels will dilate and shunt vessels will const...
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Answered by Hannah F. • Biology tutor
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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 Nicholas W. • Maths tutor
3624 Views

Describe the process of natural selection

A mutation occurs in the genotype of an organism. This results in a beneficial phenotype being expressed. This organism now has a survival advantage. Therefore, it will live longer. This means it will have m...
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Answered by Katherine O. • Biology tutor
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