Top answers

How do you solve simultaneous equations?

A simultaneous equation is when we have 2 equations which both have X and Y in them. The best way to solve these equations is to rearrange one of them to make either X or Y the subject, and then substitute i...
CN
Answered by Charlie N. • Maths tutor
3797 Views

How do I know when to use 'avoir' and when to use 'être' to form the past tense with a reflexive verb?

Most verbs take the auxiliary verb (think, the helper verb) 'avoir' to form their past tense. E.g. 'penser' - j'ai pensé (I though, I have thought). However there are a number of verbs that will use 'être' a...
RF
Answered by Roman F. • French tutor
2970 Views

What is the electronic configuration of Calcium?

Calcium has 20 electrons. The first ring can only contain up to 2 electrons.After that rings can only contain up to 8 electrons. Therefore the electronic configuration of Calcium would be: [2, 8, 8, 2]
JM
Answered by Jonny M. • Chemistry tutor
16220 Views

How to I pronounce 'o' in Russian?

The pronunciation of this vowel can be daunting at first, but once we learn the rules it is actually no more difficult than learning the pronunciation of a similar vowel in English (think about how in the wo...
RF
Answered by Roman F. • Russian tutor
13076 Views

Name the 4 different stages of Mitosis?

1- Prophase2- Metaphase3- Anaphase4- Telophase
JM
Answered by Jonny M. • Biology tutor
3613 Views