If triangle lmn has an obtuse angle at vertex m, which statements could be true? check all that apply.
triangle lmn is an obtuse triangle.
the angle at vertex l is acute.
the angle at vertex l is right.
the angle at vertex n is right.
the angle at vertex n is acute.
triangle lmn is a right triangle.

Anyone know? will mark brainliest if you're correct!

Josh has a rewards card for a movie theater he receives 15 points for becoming a rewards card holder he earns 3.5 points for each visit to the movie theater he needs at least 55 points to earn a free movie ticket which inequality can josh use to determine x, the minimum number of visits he needs to earn his first free movie ticket.

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