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I am going to assume you know what an irrational number is, given that that should have been taught right at the beginning the topic of surds. When I talk about a “rational” number, here I mean “whole num...

Leaves have 4 main adaptations which enable them to carry out photosynthesis successfully. 

1) Thin - this allows carbon dioxide to easily diffuse into the leaf cells 

2) Tr...

Initially the momentum is zero.

Due to conservation of momentum, the alpha particle and radium nucleus must gain equal but opposite momentum.

The mass of the radium nucleus ...

x² - 9x ≤ 36

1. Draw a graph.

y = x² - 9x and y = 36

2. Find the points of intersection by solv...