F/5-2.2=-2.5 solve please

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.

Which expression is equivalent to sq-80

The vertices of a triangle are a(7,5), b(4,2), c(9,2). what is m