Which quadratic equals is equivalent to (x-4)^2 -(x-4)-6=0

Alicia puts $400 in a bank account. each year the account earns 5% simple interest. how much money will be in her bank account in six months?

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

Show your workcan a right triangle have this sides? *how to prove it without using the pythagorean theorema*