Angles A and B are supplementary. The measure of angle A is 60° and the measure of angle B is represented by 3x. Which equation can be used to determine the value of x? The equations are
A. 60+3x=90
B. 3x+60=180
C. 60-3x=180
D. 3x=60

Someone . me. compound probability

If 10 men take 18 days to mow 60 acres of grass, how long will 15 men take to mow 80 acres?

According to modern science, earth is about 4.5 billion years old and written human history extends back about 10,000 years. suppose the entire history of earth is represented with a 10-meter-long timeline, with the birth of earth on one end and today at the other end.