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Expand and simplify (3x+2) (x-5)

We expand this term by term. To make sure we expand every term, I use the beak method. To do this, draw 2 curves over the equation from the 3x to the x , and then a second curve from the x to the + 2 . Then ...
DS
Answered by Dominic S. • Maths tutor
19949 Views

What is the subjunctive and when do I use it in Spanish?

While different tenses describe when an action happened, different moods describe how the speaker feels about the action. There are three moods in Spanish: the indicative (which will be the tense you normall...
AJ
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What is a disproportionation reaction?

A disproportionation reaction is when an element is both oxidised and reduced in the same reaction. You check this by looking at the oxidation state of the element at the begining of the reaction and then wh...
MV
Answered by Mia V. • Chemistry tutor
59073 Views

I am worried about the quantitative reasoning section of the UKCAT as it doesn't look like A-Level maths! How can I best prepare?

The quantitative reasoning section of the UKCAT is designed to assess general numerical skill, and so may appear quite contrasting from the sort of maths you will be used to in A-Level. You almost need to go...
EB
Answered by Eleanor B. • UCAT tutor
7078 Views

In DNA, if you know the percentage of a base on 1 strand, how do you work out the bases on the opposite strand?

This questions requires knowledge of the base pairing in DNA, plus a little bit of maths! As you know, bases on the 2 DNA strands always pair in the same way: A (adenine) with T (thymine) , C (cytosine) with...
EB
Answered by Eleanor B. • Biology tutor
14871 Views