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Solve for x when |x-1|<|2x+3|

A graph is always helpful when dealing with this kind of problems. The first thing to do when sketching is to find the intersection with the axis. Ignore the modulus function for the moment. Then flip what's...
QZ
Answered by Qinyu Z. • Maths tutor
4724 Views

How Do I Write My Exam Essays?

The key to writing exam responses is knowing how to structure your introduction, paragraphs and conclusion in a way that meets your ‘ AO ’ targets. The best way to achieve this is to use the ‘ PEAL’ structur...
RM
Answered by Rory M. • English tutor
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Please summarise FR Tennant's Aesthetic argument

FR Tennant (in his book Philosophical theology 1930) posits two arguments. The aesthetic argument and the anthropic argument. The aesthetic argument is based on a human being's appreciation of beauty in the ...
WM
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What is the difference between a divergent and convergent plate boundary

Think of the divergent film! Trish (a divergent) moves away from the faction system. Divergent plates do the same! They move away from each other, whereas convergent plate boundaries move towards one another...
WM
Answered by Will M. • Geography tutor
6451 Views

Calculate the pH of the buffer solution resulting from mixing 250 cm^3 of 0.3 moldm^-3 ethanoic acid with 250cm^3 of 0.2 moldm^-3 sodium hydroxide. The Ka of ethanoic acid is 1.8 x 10^-5.

As an acid is being added to a base, you first need to calculate what is left after they react. Without doing any calculations, we can already see that the acid is in excess as both solutions have the same v...
TD
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