Top answers

Find the value of X and Y if X^2 + Y^2 = 13 and 2X + Y = 1

Firstly, since only one equation is linear, substitution must be used. This will allow us to make a quadratic equation with one variable and solve for X and Y. To do this, I will make Y the subject of the fo...
AS
Answered by Alexis S. • Maths tutor
7198 Views

Should I use the imperfect or perfect tense in this sentence?

The perfect tense refers to a completed event in the past where the effect of the event may still continue in the present. Whereas, the imperfect tense describes ongoing past events without reference to a ti...
JP
2694 Views

How do you know when to use the subjunctive?

The thing to always bear in mind about the subjunctive is that it’s a ‘mood’, and therefore is used to express a certain emotion or tone of voice. If the sentence you’re trying to write or translate has an i...
JH
Answered by Joanna H. • French tutor
2783 Views

Describe the formation of a waterfall (usually a question worth 4 marks in an A-Level paper)

The formation of a waterfall is predominately a result of geology. Throughout the long profile of a river horizontal bands of soft and hard rock are passed over. The harder rock is generally on top of the un...
RM
Answered by Rachael M. • Geography tutor
11454 Views

Can you give me a breakdown of how to answer 'discuss' questions?

'Discuss' questions are normally worth either 12 or 24 marks. An example may be 'Discuss neural mechanisms in aggression'. Disuss questions should always start with describing something e.g. in this case, yo...
LC
Answered by Lydia C. • Psychology tutor
52081 Views