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Explain the formation of a stack

The formation of a stack occurs at a high energy coastline involving many forms of erosion. These include weathering , wave and wind erosion. Examples include freezethaw, hydraulic action and abrasion. Over ...
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Answered by Freya P. • Geography tutor
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In a cinema, male to female ratio is - 1:3. The ratio of the females, who like popcorn to females who don't like popcorn is 2:1. 10 girls don't like popcorn. How many people are there in the cinema altogether?

Ratio of females who like popcorn to the females who don't like popcorn is 2:1. If 10 females don't like popcorn, then (10 *2) 20 females like popcorn. 10+20 = 30 females altogether. 30/3= 10 males altogethe...
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Answered by Yashaswi B. • Maths tutor
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R and B are directly proportional variables. When R = 9, B = 3. What does R equal when B = 14?

R and B are directly proportional variables. Therefore, we can write a relationship between them as R = kB where k is a proportionality constant. We can rearrange this equation to calculate the value of k: R...
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Answered by Liban W. • Maths tutor
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Simplify: ((3x^2)-x-2)/(x-1).

Firstly, simplify the numerator by factorising the quadratic, to give a numerator of (3x+2)(x-1). Now, divide through by (x-1), to give (3x+2).
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Answered by Oscar K. • Maths tutor
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'Describe how journalists may approach the issue of pupil behaviour in British schools differently from sociologists' [4 marks]

To answer this question, we identify the action ( to describe ), the focus ( journalist versus sociologist approach on pupil behaviour ) and the argument ( that sociologists are systematic whilst journalists...
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Answered by Eva S. • Sociology tutor
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