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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
8501 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
29983 Views

Explain one consequence of a more globalised world?

More interdependency More free trade Increased competition
SC
Answered by Saqlain C. • Economics tutor
2331 Views

How do you know when to use sin, cos and tan?

First draw the triangle and label all the information you have as well as the unknown angle or side length. There should be at least one angle labelled with some informtion - use this angle to label the oppo...
AW
Answered by Anna W. • Maths tutor
117119 Views