Please I need help ASAP

Awindow washer cleans 42 windows in 2 hours. at this rate, how many windows did he clean in 180 minutes.

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

The blue segment below is a diameter of o. what is the length of the radius of the circle?