Please help 5 to the 11th power divided by 5 to the ? Power equals 5 to the 4th power

Rearrange the formula c^2 = a^2 + b^2 for b

In trapezoid klmn, kj=19.2 and jm=22.5. identify ln.

The rumpart family is building a new room onto their house. the width of the new room will be 16 feet. the length of the room will be 4% greater than the width. write an expression to find the length of the new room. what will be the area of this new room?