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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 quant...

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.

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) = 32M...

Answered by Helen H. • Chemistry tutor

2074 Views

Describe what is meant by the term mutualistic symbiotic relationship and provide an example of one.

A mutualistic symbiotic relationship is a relationship between 2 different species where both species benefit. For example, the relationship between a plant and its pollinators is a mutualistic symbiotic ...

Answered by Heather D. • Biology tutor

1371 Views

Simplify the following fraction - Numerator = 2(8-k) + 4(k-1) Denominator = k^2 - 36

The first task is to multiply out the brackets in the numerator. By doing this, we find that the numerator is equivalent to "12 + 2k". We should now simplify the denominator. We can convert it i...

Answered by Matteo L. • Maths tutor

3295 Views