Given \sqrt{27}+\sqrt{108} 27

+
108


=27^{\frac{1}{2}}+108^{\frac{1}{2}} =27
2
1


+108
2
1


3^{\frac{1}{2}}\cdot9^{\frac{1}{2}} +3^{\frac{1}{2}}\cdot36^{\frac{1}{2 }}3
2
1


⋅9
2
1


+3
2
1


⋅36
2
1


3\cdot3^{\frac{1}{2}}+6\cdot3^{\fra c{1}{2}}3⋅3
2
1


+6⋅3
2
1


18\cdot3^{\frac{1}{2}}18⋅3
2
1

If a || b and b | y, then ? a) x || y. b) x | a. c) a | y. d) a || y.

If i have 20$ and i gave 5$ away how much i got

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.