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Rationalise the following: { 5 } / { 3 - sqrt(2) }

The aim here is to turn the fraction so that the denominator does not have a surd. Given that we know that any surd squared is equal to the number itself, i.e sqrt(2) * sqrt(2) equas 2, or sqrt(x) * sqrt(x) ...
AS
Answered by Amin S. • Maths tutor
7026 Views

Describe the similarities and differences between the structure of ATP and a DNA nucleotide

Similarities Both have 5 Carbon sugar - pentose Both contain a phosphate Both contain adenine Differences DNA has a deoxyribose sugar whereas ATP has a ribose sugar DNA can involve all four bases, ATP only a...
AR
Answered by Abdul R. • Biology tutor
71755 Views

What is the diffference between the past tenses in French?

There are two main past tenses : The imperfect (je mangeais) translates to the English imperfect (I was eating). The passé composé (j'ai mangé) translates to the English present perfect (I have eaten) but ca...
RG
Answered by Rebecca G. • French tutor
2291 Views

Your hospital has received an extra budget allowance this month, allowing either one life saving heart transplant operation for an eight year old child, or 100 hip replacements. Which do you choose and why?

An ethics question such as this is a common medical school interview question. It is important to appreciate there is no definite right answer, this is merely testing your ability to weigh up both sides of a...
RH
2796 Views

Solve the equation: x^2 + 9x + 20 = 0

This is a quadratic equation. There are different ways to solve quadratic equations including factorising them and using the quadratic formula. This is a simple equation so it cn be solved by factorising. It...
FM
Answered by Francesca M. • Maths tutor
10752 Views