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Total mark for whole class is 3060= 1800Total mark for girls is 2054= 1080Therefore subtract smaller from larger to get total mark for boys, and divide that number by 10 to yield 72.
Hard engineering is artificial, expensive and large scale coastal defences, where as soft engineering is more "in tune" with the environment and is considered ecologically friendly by using more...
Sedimentary rocks are those that are formed by the weathering or breaking down of pre-existing rocks that then get laid down and lithified in layers such as sandstone. Igneous rocks are formed by tectonic...
The two lines are parallel if they have the same gradient, so for a line in the form y=mx+c, m of the two lines must be the same.Line 1 is already in this form so we need to rearrange line 2 to be in this...
Solved by differentiation with respect to x,i) dy/dx = 2x - 2 - 12x^(-1/2)ii) d^2y/dx^2 = 2 + 6*x^(-3/2)
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