Top answers

If Tom flips a coin 3 times, what is the probability the result are heads, heads, heads, or tails,heads, tails? (assuming we have a fair coin)

This question can be solved using a tree diagram. First we need to map out the two possible outcomes from the question: H=heads T= tails. The first scenario is HHH, as the probability of H each time is 1/2 w...
RB
Answered by Ross B. • Maths tutor
4854 Views

When to use the preterite or imperfect tense?

Knowing when to use the preterite or imperfect tense when expressing a past action is one of the trickiest aspects of spanish grammar and can cause confusion for any level of spanish speaker. I always like t...
HS
Answered by Harrison S. • Spanish tutor
2661 Views

Explain the advantages of being a franchisee

Tips: When a keyword is mentioned in the question, it is advised to start your answer by defining that keyword or concept (you would usually get a few marks for this) . In this case, start your answer by def...
SG
3318 Views

Explain the series of events at a synapse between 2 neurons.

An impulse travels along the pre-synaptic neurone, and when it reaches the axon ending it stimulates calcium channles to open on the pre-synaptic membrane. This allows calcium ions to rush into the neurone c...
JL
Answered by Jim L. • Biology tutor
4174 Views

How do I use the simple past tense in German and when should I use it?

The two main past tenses in German are the simple past and the present perfect. The simple past uses just one word, for example 'ich ging', while the present perfect uses two words, for example 'ich bin gega...
RW
Answered by Rishabh W. • German tutor
5450 Views