Winnnie stuffs 120 envelopes in 15 minutes. how many envelopes can she stuff per minute?

a.8 envelopes per minute
b.9 envelopes per minute
c.480 envelopes per minute
d.1800 envelopes per minute

if there's work show : )

Find the midpoint of the segment with the given endpoint k(-4,4) and l(6,12)

Aline parallel to a triangle's side splits ab into lengths of x - 5 and x + 2. the other side, ac, is split into lengths of x and x + 12. what is the length of ac? a) 12 b) 24 c) 36 d)

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