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A ladder 6·8m long is leaning against a wall, as shown in the diagram. The foot of the ladder is 1·5m from the wall. Calculate the distance the ladder reaches up the wall. Give your answer to a sensible degree of accuracy.

There's a lot of information here so we should start out by drawing up a diagram. From this we can see that we have a right-angled triangle, and we know two of the angles and want to work out a third. The...

RS
Answered by Rohan S. Maths tutor
4155 Views

Why is genetic drift important in small populations?

Within a population there is genetic variation between individuals. For example, individuals have different combinations of different alleles, which may or may not be passed onto their offspring. Genetic ...

BP
Answered by Bethany P. Biology tutor
22105 Views

What are some different views on free will and what do they mean?

Here are the main views on whether or not humans have free will:Hard Determinism: Our will and actions are completely controlled by external factors (God, the laws of nature and causation, etc). You can r...

GQ
2311 Views

A curve has equation: y = x^3 - 3x^2 + 5. Show that the curve has a minimum point when x = 2.

A minimum point will have a gradient of 0 (although so will a maximum point or a point of inflection). dy/dx = 3x2-6x. We can substitute x = 2 into this equation to give 0 (alternatively solve ...

TC
8398 Views

Define what degenerate genetic coding means and why it is advantageous

Degenerate genetic coding means that although there are 64 different codons, there are only 21 amino acids, meaning that there are multiple codons which code for one single amino acid. The advantage for t...

AS
Answered by Avinash S. Biology tutor
43086 Views

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