What is 12/9 in simplest form

Describe the 2 algebraic methods you can use to find the zeros of the function f(t)=-16t^2+400.

Parallelogram efgh is a rectangle. he = 6, and fe = 8. find ge: and find fj:

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