Find the area under the standard normal distribution curve between z = –2.05 and z = 2.05.

Adifferent website gives the cost for the first train as £56.88 and the second train as £20.11 with a £9.50 charge for cycle storage for the whole trip. how much would the journey cost you?

Find the solution of this system of equation -7x+y=-20 9x-3y=36

What is the value of the discriminant of the quadratic equation -2x = -8x + 8 and what does its value mean about thenumber of real number solutions the equation has?