X= -135°, cos 2x =

1 - 2 sin^2 x
1 - 2 sin x
1 + 2 sin^2 x
1 + 2 sin x

The contents of 3838 cans of coke have a mean of x¯¯¯=12.15x¯=12.15. assume the contents of cans of coke have a normal distribution with standard deviation of σ=0.12.σ=0.12. find the value of the test statistic zz for the claim that the population mean is μ=12.μ=12.

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?

What values of x satisfy the inequality x^2-9x< 0? how is your answer shown on the graph?