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Explain one economic problem caused by traffic congestion

Traffic congestion: causes delays and results in the late arrival of workersTherefore, there is a loss of working hours which results in lower productivity for companies as there is less time available to be...
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Answered by Saskia W. • Geography tutor
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2x+y=18, x-y=6; Solve the simultaneous equations

2x+y =182) x-y =6(x-y=6) multiply by +22x-2y = 121) 2x+y = 182) 2x-2y=12 -subtract equation 2 from equation 10x-y=6 -Therefore -y=6 so y= -6Put value for y into either of the equation in order to find value ...
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Answered by Saskia W. • Maths tutor
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Why does bread start to taste sweet after being chewed in the mouth for a long period of time?

[Hints given to student: (1) Bread contains starch, and (2) saliva mixes with your food when you are chewing]. ANSWER : Bread contains the carbohydrate called 'starch', a molecule consisting of a chain of gl...
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Answered by Raghav A. • Biology tutor
53948 Views

Who won the Cold War and why was this outcome significant to the progression of world history?

Break this question into two parts. Firstly, what was the result of the Cold War? Secondly, why was this result important? To answer the first question, ask yourself when the Cold War ended and why you think...
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Answered by Abby S. • History tutor
5236 Views

Expand the following brackets: (2x + 1)(x + 3)

The FOIL technique (First, Outside, Inside, Last) is very useful when expanding out brackets. Using this method we have:2x * x = 2x 2 (First) 2x * 3 = 6x (Outside) 1 * x = x (Inside) 1 * 3 = 3 (Last)So overa...
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Answered by Ben A. • Maths tutor
4517 Views