Plz Help! What is the value of x?

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

Thanh and her crew are building a stage in the shape of a trapezoid for an upcoming festival. the lengths of the parallel sides of the trapezoid are 14 ft and 24 ft. the height of the trapezoid is 12 ft. what is the area of the stage? enter your answer in the box. ft²

When steve woke up. his temperature was 102 degrees f. two hours later it was 3 degrees lower. what was his temperature then?