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In our macro-economic models, we always input a central bank interest rate. Yet, when I go to the bank to borrow money, I get a much higher interest rate. How does a higher or lower interest rate effect lending if I can't borrow at that rate anyway?

While this is not necessarily relevant for the IB exams, it is important to keep in mind that the interest rate that we use in the macro-economic models like the AD/AS model is an approximation of cost of...

Answered by • Economics tutor

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Find the volume of a cone with radius 13cm and with a perpendicular height of 9cm.

volume= 1/3(πr²)h= 1/3 (3.14x 13x 13)x9= 1592.79 cm³ (2.d.p) = 1590 cm³ (3.s.f)
r= radius h= perpendicular height

Answered by Meghan B. • Maths tutor

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Can you name for four chambers of the human heart?

left atrium, right atrium, left ventricle, right ventricle

Answered by Ashley J. • Biology tutor

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3 eggs cost £4.80 and 4 slices of bread cost £3.00. What is the cost of 1 egg and 1 slice of bread?

3 eggs = £4.80£4.80/3 = £1.601 egg = £1.604 slices of bread = £3.00£3.00/4 = £0.751 slice of bread = £0.751 egg and 1 slice of bread = £1.60 + £0.75 = £2.35

Answered by Oluwatobi A. • Maths tutor

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Discuss the contribution of behavioural psychologists such as Pavlov and Skinner to our understanding of human behaviour

Explanation: developed our understanding that human behaviour is (can be) learned, environmentally developed, and brought focus on to learning. Behavioural psychologists studied ob...

Answered by Gemma S. • Psychology tutor

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