Please answer this i will give brainliest. no fake answers please.

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

Find the area of the region that is inside r=3cos(theta) and outside r=2-cos(theta). sketch the curves.

Aclassroom is made up of 11 boys and 14 girls. the teacher has four main classroom responsibilities that she wants to hand out to four different students (one for each of the four students). if the teacher chooses 4 of the students at random, then what is the probability that the four students chosen to complete the responsibilities will be all boys?