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What is 15% of 640?

There are different ways to approach this question: directly or breaking it down.By using the method of breaking it down, we can split this percentage into easier percentages. 15% is the sum of 10% and 5%, w...
RR
Answered by Romina R. • Maths tutor
24337 Views

Do cowardice and paralysis dominate Hamlet's character in Shakespeare's 'Hamlet' ?

On the one hand, Shakespeare's characterisation of Hamlet is seen to be one of paralysis, and possessing a fragility and inability to express his feelings and thoughts, thus rendering him unsuitable to fulfi...
NB
Answered by Nathalie B. • English tutor
5689 Views

Calculate the temperature rise of a mass due to energy transfer over time.

Specific question: The hot tub system has a volume of 4.5 m3 and is filled with water at a temperature of 28 °C. The heater transfers thermal energy to the water at a rate of 2.7 kW while a pump circulates t...
DS
Answered by Denis S. • Physics tutor
19023 Views

Why is the concept of 'rogue states' controversial?

The term 'rogue state' is often used to denote a state which presents a risk to international stability through its failure to adhere to both domestic and foreign policy norms. Domestically, rogue states may...
JB
5365 Views

Given that 9 sin^2y-2 sin y cos y=8 show that (tany - 4)(tany + 2)= 0

This question requires us to make use of the trigonometric identities tan(y)=sin(y)/cos(y) and sin^2y + cos^2y = 1 which are given in the formula sheet of the exam. Since we know that sin(y)/cos(y) can be su...
SG
Answered by Swetha G. • Maths tutor
5094 Views