Which statement is true regarding the diagram of circle P?
S
P.
х
y
N
O The sum of y and z must be 2x.
O The sum of y and z must be x.
O The difference of z and y must be 2x.
O The difference of z and y must be {x.

How many liters of peroxide should be added to 12 liters of an 8% peroxide solution so that the resulting solution contains 16% peroxide?   original added new amount of peroxide 0.96 liters x 0.96 + x amount of solution 12 liters x 12 + x 0.18 liter 1.14 liters 1.92 liters 2.10 liters