Afootball player gained 1200 yards last season and 900 yards this season. find the percent of change. is this an increase or decrease

If 2(a^2+b^2)=(a+b)^2 then, > a+b=0, > ab=0, > a=b, > 2a=b

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

If a flying disk is 139 meters in the air and travels at an average of 13 m/s how long is it in the air