Please help Due in 3 Min!

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 a parallelogram with base 15 yards and height 21 2/3

Helll ! 1,400 tons of wheat of two different varieties was delivered to the silo. when processing one variety, there was 2% of waste and 3% during the processing of the second variety of wheat. after the processing, the amount of remaining wheat was 1,364 tons. how many tons of each variety of wheat was delivered to the silo?