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Explain the formation of a flood plain.

Flood plains form when the discharge of the river channel exceeds it's capacity. As the river transports sediment via traction, suspension, saltation and solution the sediment is held within the river cha...

Answered by Joseph G. • Geography tutor

19767 Views

Use approximations to 1 significant figure to estimate the value of 0.101 x (51.2)^2 / (3.96)^1/2

Firstly simplify the equation down so all the elements are approximated to 1 significant figure, this gives us:0.1 x 50² / 4^1/2Then work out the values of the 50² and 4

Answered by Louise B. • Maths tutor

4367 Views

How do you expand out and simply brackets, like the following: (x-3)(x+4)?

So when you want to expand out 2 brackets, there's a really simple method, known as FOIL. FOIL stands for "First, Outer, Inner, & Last". So if we look at the two brackets you gave as an exam...

Answered by Chang K. • Maths tutor

3498 Views

How do I find the nth term of a sequence?

When given a sequence of numbers, there is often a rule using n, which symbolises the term of the sequence. For example in the sequence 3, 5, 7, 9, when n=1 it is referring to 3, since this is the first t...

Answered by Katie R. • Maths tutor

7010 Views

Solve algebraically the following if there is a solution: x+y=3 2x+y=5 x^2+y=6

First we realize that the question asks IF there is a solutionLet us start with the simplest equations, x+y=3 and 2x+y=5By subtracting the first equation from the second we see x=2 and subbing into x+y=3 ...

Answered by Max S. • Maths tutor

3139 Views