Which of the following sets of angles sum to 180°?
picture included, please help.

Julia is going for a walk through the neighborhood. what unit of measure is most appropriate to describe the distance she walks?

Rockwell hardness of pins of a certain type is known to have a mean value of 50 and a standard deviation of 1.1. (round your answers to four decimal places.) (a) if the distribution is normal, what is the probability that the sample mean hardness for a random sample of 8 pins is at least 51?

Janet drove 300 miles in 4.5 hours. write an equation to find the rate at which she was traveling