Top answers

There are 13 counters in a bag. 4 counters are red, the rest are blue. Alice takes 2 counters without replacing them. What is the probability that both counters are the same colour?

To begin question, we must establish how blue counters there are at the start. This is a simple subtraction calculation.13-4=9There are 4 red counters and 9 blue counters, which totals to 13 counters. Next, ...
AE
Answered by Austin E. • Maths tutor
10760 Views

Rutherford’s alpha particle scattering experiments gave what evidence about an atom?

Before we can look at the evidence we need to look at the observations from the experiment. During the session we will go through the experiment and then the observations to deduce the atom theory - and how ...
AS
Answered by Anmol S. • Physics tutor
2664 Views

What is a test for iron(III) compounds?

Using thiocyanate ions to give a red complex. During the session I will go through the reaction mechanism and evaluation of soluble / insoluble products.
AS
Answered by Anmol S. • Chemistry tutor
4777 Views

How do I integrate 4x*exp(x^2 - 1) with respect to x?

During the session I would go step by step through the integration by substitution.
AS
Answered by Anmol S. • Maths tutor
3890 Views

When to use the present participle (or gerund) in French and how is it different to the English gerund (ING-form)?

The French gerund is a verb form that ends with -ant. Just like the ING-form in English, it has various uses. First, it can express a progressive action (an action that is taking place/in the process of happ...
FT
Answered by Fanny T. • French tutor
3895 Views