Sally can paint a room in 7 hours while it takes steve 6 hours to paint the same room. how long would it take them to paint the room if they worked together.

One of the complementary angles is 4 degrees mor than the other. find the angles (recall that complementary angles are angles whose sum is 90 degrees.) which of the following can not be used to solve the problem if x represents one of the angles? a. 2x-4=90 b. 2x+4=90 c. x+4=90