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Solve the following pair of simultaneous equations: 1. 3x + 2y = 9 2. 6x + 5y = 21

We can solve this pair of simultaneous equations using substitution. To do this, we firstly have to rearrange one equation to get one variable on its own. For example, we can subtract 2y from each side of th...
MC
Answered by Mark C. • Maths tutor
4672 Views

How would you differentiate 3x^4 - 2x^2 + 9x - 1

First we follow the "times by the power and take one from the power" rule. This is the easiest way to remember how to differentiate anything. So (3x4)x (4-1) -(2x2)x (2-1) +(9x1)x (1-1) -(1x0)x (0-...
CE
Answered by Cathy E. • Maths tutor
3901 Views

Briefly summarise the overall process in applying for Medicine?

In a summary: Lots of extra-curricular activities, volunteering throughout UKCAT exam After AS/ start of A2. UCAS application A2 Interview A2 Hardcore studying throughout If you want the points above filled ...
JJ
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How come the antibodies in our blood and lymphatic system do not attack our own, but only specific antigens?

Antibodies and antigens are made out of proteins. Proteins have a specific primary structure. The primary structure is the sequence of the amino acids that make up the protein. This sequence is specific to a...
CU
Answered by Cassandra U. • Biology tutor
3326 Views

How do you get from an a base like adenine to an enzyme/protein?

There are four bases- ATGC adenine, thymine guanine and cytosine. Each base is attached to a deoxyribose sugar and a phosphate sugar. This makes up a nucleotide. Three nucleotides are called a codon which pr...
JJ
Answered by Joshny J. • Biology tutor
3447 Views