Top answers

Explain the processes involved in the formation of a waterfall. (6 marks)

A waterfall is an erosional landform, which occurs where there is a layer of hard rock on top of a layer of softer rock. Erosional processes such as hydraulic action and abrasion occur as the river flows dow...
HC
Answered by Hannah C. • Geography tutor
60655 Views

Find the roots of the equation y = 2x^2 + 5x + 2.

The root of an equation is a point where, when the equation is plotted on a graph, it crosses the x axis. The x axis is the line y = 0, so the roots can be found by setting 0 = ax 2 + bx + c where a,b and c ...
WU
Answered by Will U. • Maths tutor
6563 Views

What happens to the diaphragm during inspiration?

Diaphragm contracts which causes it to move downwards/become flatter
WH
Answered by Will H. • Biology tutor
3522 Views

Evaluate x^2 +2x -4 = 0

Using the quadratic formula (-b +- sqrt(b^2 -4ac))/2a we can sub substitute a = 1, b=2 and c = -4 to solve. The answer is x = -1 +/- sqrt(5)
AC
Answered by Adeolu C. • Maths tutor
4355 Views

Translate the following Facebook post: "Il y a un centre commercial dans ma ville. Le samedi j’aime faire les magasins avec ma copine. Récemment j’ai acheté un nouveau portable. C’était trop cher. Je ne sais pas si on va sortir la semaine prochaine."

Il y a un centre commercial dans ma ville - There is a shopping centre in my town Le samedi j'aime faire les magasins avec ma copine - On saturdays (recurrent) , I like to do the shops/go shopping with my fr...
CS
Answered by Clarisse S. • French tutor
5371 Views