Does dividing by -1 change an inequality

The multiplication property of zero states that the product of any number and 0 is 0. what must be true about either a or b to make ab=0

Plz a. s. a. p. the table shows the number of male and female contestants who did not win a prize. what is the probability that a randomly selected contestant won a prize, given that the contestant was female? write the probability as a percent. round to the neares tenth, if needed.

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