I need an answer fast plz and thank u

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

It takes jonas 7 1/4 minutes to run the mile. it takes mario 8 5/12 to run the mile. how much faster is jonas than mario? 5/6 minute 1 1/3 minutes 1 1/6 minutes 1 1/2 minutesi will give points and brainlest

Which of the following is the true for f(x) = 5cos