What is 1/2 as a decimal

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.

Given f(x)= 9x+1 and g(x)=x^3, choose the expression (f*g)(x)

The square pyramid has a volume of 441 cubic inches. what is the value of x? 1/7x is the height x is the base