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How has the writer structured the text to interest you as a reader?

At the beginning of the text, Smith opens with a complex sentence which gives much detail about the setting. This allows the reader to become immediately immersed within the scene as the sensory description ...
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Split 1/x^2-1 into partial fractions

First we need to factorise the denominator into (x-1)(x+1). Now we identify that 1/(x-1)(x+1) is equivalent to A/(x-1) + B/(x+1) and now we solve to find the values of A and B. By simplifying the equivalent ...
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Answered by Thomas M. • Maths tutor
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Please can you help me to understand the concept of price elasticity of demand (PED)?

What is the relationship between price and quantity demanded for a certain good X? PED can help us solve this question. The price elasticity of demand is calculated as the "percentage change in quantity...
Answered by • Economics tutor
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Solve x^2-5x+6=0

We can factorise into (x-3)(x-2)=0 to get x=3 and x=2 as solutions for this equation.
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Answered by Thomas M. • Maths tutor
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In the labratory you are given 1.5g of butyl butanoate ester C8H16O2. (i) Draw the functional group of this compound. (ii) What is the emperical formula of the compound. (iii) What is the molar mass of the compound? (iv) How many moles were you given

(i) Ester functional group RCOOR(ii) The emperical formula is the simplest whole number ratio of atoms in a compound therefore C4H8O(iii) The molar mass is C (12 x 8) = 96 H (1 x 18) = 18 O (2 x 16) = 32Mola...
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Answered by Helen H. • Chemistry tutor
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