Over a million students use our free study notes to help them with their homework
An obtuse angle is an angle that is greater than 90degrees but less than 180 degrees. when looking at the diagram all angles apart from B are acute (as they are less than 90 degrees) Therefore B is the ob...
Take the curve y = 2x2 - 4 and point P (2,4). a) First, find the straight line tangent to the curve at point PAPAnswered by Artyom P. • Maths tutor3949 Views
For a reaction to occur molecules must collide with energy greater than or equal to the activation energy, in the correct orientation. The factors affecting the rate of a reaction are:Pressure of re...
First you should look at the equation and try and get a sense of the general shape of the graph. The highest power in here is a 3, so this is a cubic graph. The coefficient (number in front of the x^3) is...
The common mistake the students make is to simplify the fraction before factorising numerator and denominator. Here, we need to see that the numerator: x^2 - 4 is a difference between squaresMMAnswered by Martina M. • Maths tutor3547 Views
←
2007
2008
2009
2010
2011
→
Internet Safety
Payment Security
Cyber
Essentials