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How does erosion cause a waterfall to move -upstream?

The force of water in a river, and more specifically, in a waterfall, has the ability to carve and erode the banks of the river. This is known as hydraulic action. As water falls over a waterfall, it has a l...
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Answered by Thomas R. • Geography tutor
13044 Views

A right angled triangle has 2 known sides measuring 3 meters, 4 meters respectively. Find the hypotenuse and the smallest angle in the triangle.

This is an example of a pythagoras. The student has to use the knowledge that the hypotenuse (longest side) is the square root of the sum of the squares of the known sides. In this instance, it would be 4^2 ...
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Answered by Zara M. • Maths tutor
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How would I answer a problem question involving diminished responsibility?

To answer a problem question involving murder and voluntary manslaughter, you first need to identify whether the defendant has committed both the actus reus and mens rea of murder (D must have caused the dea...
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Answered by Emily H. • Law tutor
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Find x and y when 3x + 4y = 27 and x + 2y = 11

Use the elimination method to remove a common coefficient. Multiply one of the equations to find a common coefficient, eg multiply the second equation by 2 to get 2x + 4y = 22, to reach the common coefficien...
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Answered by Eleanor S. • Maths tutor
7026 Views

Find x when 2x^2 −x−6=0

The equation is: 2x^2 - x -6 =0 step 1. (2x) and (x) now you need to separate out this equation into two further brackets. You start with the highest power of X, in this case 2X^2. As 2 has no smaller factor...
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Answered by Talia P. • Maths tutor
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