The midsegment of triangle abc is lm. what is the length of lm if ac is 26 inches long?

Two customers went to a post office. first customer paid $12 for 14 and 5 envelopes the second paid 24.80 for 10 postcards and 15 envelopes. what is cost of each envelope?

One line passes through (-7,-4) and (5,4) . another line passes through the point (-4,6) and (6,-9)

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