Top answers

Find the solutions to the quadratic equation x^2-9x+20=0

By factorising the expression, (x-5)(x-4)=0. This means that either (x-5)=0 or (x-4)=0. By solving these equations we can work out the solutions to be x=4,5.
CM
Answered by Chris M. • Maths tutor
3887 Views

Draw the chemical structures of butane, butene and butyne.

I would then go through with the student and explain that an alkane is a hydrocarbon made up of single carbon-carbon bonds only. This is why butane ends in -ane, it begins with but- due to the number of carb...
GI
Answered by Gavin I. • Chemistry tutor
10890 Views

Tout d’abord, peux-tu me donner quelques renseignements sur toi ?

Je m'appelle Marie, j'ai 19 ans. ma date de naissance est le 18 mai 1998 J'ai un frère et une soeur. Je suis né à Paris et je suis française. Je suis une étudiante à l’université de Bristol, j’étudie la Zool...
MH
Answered by Marie H. • French tutor
3518 Views

Describe 2 features of the music in this extract that would suggest an African influence

Polyphonic rhythms similar to those used within the African drumming style - Use of the Djembe - Use of African spoken language - The shaker used to good effect to create crickets/insect sounds
CP
Answered by Charles P. • Music tutor
4307 Views

What is the difference between aerobic and anaerobic respiration?

Aerobic respiration needs oxygen. It is the release of a relatively large amount of energy in cells by the breakdown of food substances in the presence of oxygen: glucose + oxygen → carbon dioxide + water Ae...
DH
Answered by Dan H. • Biology tutor
4242 Views