8x9 don. t tael me answer mom said teal me how do it and not answered

Someone . me. compound probability

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

Plz hurry evaluate the expression a+b where a=8 and b=19