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What are latin binomials and why do we use them?

The binomal system was invented by Carl Linnaeus in the 1700s. Latin binomials are names we use to identify different species. They come in two parts ('bi' means two, and 'nomial' means name) which identify ...
BJ
Answered by Bryony J. • Biology tutor
13825 Views

Express f(x) = x^2 + 5x + 9 in the form (x + a)^2 + b, stating the values of a and b.

The question asks you to complete the square on the function f(x). First, we split the function: f(x) = (x^2 + 5x) + 9 And recognise that we need the form (x^2 + 2k + k^2). Identifying 2k = 5, we have that k...
LB
Answered by Lee B. • Maths tutor
8064 Views

Write the opening part of a story about a place that is severely affected by the weather.

I wake up in a daze. I am breathing but just about. My hand is red - I'm bleeding. What happened? My eyes open slowly to realise the train is standing on its side. There are a few lifeless bodies displaced f...
VD
26566 Views

Simplify (4^2)*(2^3)*16

Indice rules are fundamental in answering this question 1) (a b )(a c ) = a (b+c) 2) (a b )/(a c ) = a (b-c) 3) (a b ) c = a (b c) 4) a (-b) = 1/(a b ) 5) a 0 = 1 We can simplify 4 2 to (2 2 ) 2 and using ru...
OW
Answered by Oak W. • Maths tutor
3929 Views

What provides the centripetal force on a satellite and what are the factors that determine the size of the centripetal force on the satellite

Centripetal Force = (mv^2)/r The centripetal force must always act towards the centre of the circle in which the satellite is travelling. Therefore it is a attractive force from the Earth and hence gravitati...
NH
Answered by Namita H. • Physics tutor
13695 Views