Oz find the value of at the point (1,1,1) if the equation 8xy+z"x- 2yz -7 defines z as a function of the two independent variables x and y and the partial derivative exists the value of dx at point (1,1,1) is□ type an integer or a simplified fraction.)

Trigonometry hellllllpppppppp asap

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 is the graph of the piecewise function f(x)? f(x)=[tex]f(x) = \left \{ {{-x+1, x\leq 0 } \atop {x+1, x\ \textgreater \ 0}} \right.[/tex]