X+2y=4 how do i get y by its self .
step by step please .

Simplify (a/b - b/a) times (a - a^2/a+b) a - a^2/a=b is a mixed number

If you shift the linear parent function, f(x)=x, up 13 units, what is the equation of the new function?

The weights of players in a basketball league are distributed normally. the distance (d) of each player's weight (w) from the mean of 86 kilograms was computed as follows: d = |w - 86| if d is greater than 7 for approximately 5% of the players, what is the approximate standard deviation of the players' weights? a. 1.75 kilograms b. 3.5 kilograms c. 4.3 kilograms d. 7 kilograms