Top answers

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 channe...
JG
Answered by Joseph G. • Geography tutor
21114 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 50 2 / 4 1/2 Then work out the values of the 50 2 and 4 1/2 50 2 = 25004 1/2 =2Put these b...
LB
Answered by Louise B. • Maths tutor
4970 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 example...
CK
Answered by Chang K. • Maths tutor
4192 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 term...
KR
Answered by Katie R. • Maths tutor
8328 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 we ...
MS
Answered by Max S. • Maths tutor
3574 Views