What times what equals -4.75 but added together equals -9

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.

What is the probability of rolling a single die greater than 4

F(x)= 4x g(x) =x-1 what is f(x) divided by g(x)