There are 3 cans that store 9 tennis balls consider the number of balls per can. find the constant of proportionality for this .write an equation to represent the relationship

To solve the system of equations below, grace isolated the variable y in the first equation and then substituted into the second equation. what was the resulting equation? 3y=12x x^2/4+y^2/9=1

Find the values of y: 3y^3(y^2+ 2/3y)=0

Anormally distributed data set has a mean of 176.3 and a standard deviation of 4.2. what is the approximate z-score for the data value of 167.9? 2.00 −2.00 8.4 −8.4