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Let N be an integer not divisible by 3. Prove N^2 = 3a + 1, where a is an integer

For N to be not divisible by 3, N can either be of the form 3k + 1 (1,4...) or 3k + 2 (2,5...), where k is an integer. The proof can then be done by checking both 3k + 1 and 3k + 2 when N is squared, to see ...
Answered by • Maths tutor
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How can the concept of opportunity cost be explained on different aspects of the economy?

Opportunity cost is the next best alternative choice that someone has. In an economy, it can be confronted by several actors; the government itself, consumers, or firms. On an individual level (consumer) , i...
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Answered by Stavria K. • Economics tutor
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how might a competitive inhibitor prevent the enzyme trypsin from working

inhibitor is a similar shape to the substrate this means the inhibitor blocks the active site of the enzyme the substrate cannot bind to the active site, so fewer enzyme substrate complexes can form
Answered by • Biology tutor
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how is the income statement (I/S) related to the balance sheet (B/S)

answer structure: definition, explanationdefinition: I/S tells you what happened throughout the year, B/S is a snapshot of financial position of a firm at a specific dateexplanation: bottom line on I/S (net ...
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Answered by Hue C. • Accounting tutor
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explain what is price elasticity of demand (PED)

answer structure: definition, equation/ graphs, explanationdefinition: PED measures the responsiveness of demand for a product to a change in its own priceequation: change in demand %/ change in price % (thi...
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Answered by Hue C. • Economics tutor
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