If the only tool is a ruler, how could you use it to show that a quadrilateral is a rectangle?

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

Which inequality has a dashed boundary line when graphed ?

Rewrite the polynomial -9x5 + 36x4 + 189x3 in factored form.