Whats the definition of the a square root ?

F(n + 1) = f(n) – 8. if f(1) = 100, what is f(6)?

Which of the following best describes the delian problem?

White shapes and black shapes are used in a game. some of the shapes are circles. while the rest are squares. the ratio of the number of white shapes to the number of black shapes is 5: 11. the ratio of the number of white cicrles to the number of white squares is 3: 7. the ratio of the number of black circles to the number of black squres is 3: 8. work out what fraction of all the shapes are circles.