Which set of angles can be form a triangle

If square root x = -7, then x= -49 true or false

1) you deposit $2,500 in an account that earns 4% simple interest. how much do you earn in eight years?

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