The sunglasses cost €70 The exchange rate is €1 = £0.895
Emad says, "The sunglasses cost less than £60"
b) Using a suitable approximation, show that Emad is wrong.​

Factor completely. x^8 - 1/81 a) (x^4 + 1/9)(x^2 + 1/3)(x^2 - 1/3) b) (x^4 - 1/9)(x^2 + 1/3)(x^2 - 1/3) c) (x^4 + 1/9)(x^2 - 1/3)2

Use the graph of the sine function y=2sinθ shown below

Adrawer contains 12 identical white socks, 18 identical black socks and 14 identical brown socks. what is the least number of socks you must choose, without looking, to be certain that you have chosen two socks of the same colour?