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Please explain the concept of price elasticity of demand

Price elasticity of demand describes how the demand for a good responds to a change in its price. This is calculated by dividing the percentage change in Quantity demanded by percentage change in Price (alwa...
FM
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Prove that 12 cos(30°) - 2 tan(60°) can be written as √k where k is an integer, state the value of k.

Conversion of trigonometric functions: cos(30°) = √3 / 2 tan(60°) = √3 Computing equation with trigonometric substitutions: 12 cos(30°) - 2 tan(60°) = 12 (√3 / 2) - 2 (√3) = (12 / 2) x √3 - 2√3 = 6√3 - 2√3 =...
ND
Answered by Nic D. • Maths tutor
8511 Views

Calculate the percentage by mass of nitrogen in an ammonia molecule (NH​​​​​​​3) . Take the relative atomic masses of hydrogen and nitrogen to be 1 and 14 respectively.

Calculating the mass of 1 molecule of ammonia: Mass = ( Number of hydrogen atoms x Mass of hydrogen atom) + ( Number of nitrogen atoms x Mass of nitrogen atoms) Mass = ( 3 x 1 ) + ( 1 x 14) = 17 Calculating ...
ND
Answered by Nic D. • Chemistry tutor
30008 Views

I don't understand how to calculate initial rates of reaction based on experimental data

The experimental data given in the question will serve as a basis for comparison when answering the question. You must compare the initial rates of reaction given to the concetrations of the rectants. For ex...
ET
6285 Views

To what extent do the separation of powers and checks and balances limit government in the USA?

The question asks to assess the effect to which both the separation of power and the checks and balances limit the whole government of the USA, not just its executive branch. Firstly, the separation of power...
JD
10389 Views