Prove algebraically that 0.5 recurring =5/9 use x in working

Idon’t understand this.. will someone ? will mark brainliest along with 20 points.

Koji is installing a rectangular window in an office building. the window is 823 feet wide and 534 feet high. the formula for the area of a rectangle is a=bh. what is the area of the window? enter your answer as a mixed number in simplest form in the box. $$ ft2

Wich statement could be used to explain why the function h(x)= x^3 has an inverse relation that is also a function