Heather, brian, and rafael sent a total of 82 text messages over their cell phones during the weekend. rafael sent times as many messages as heather. heather sent fewer messages than brian. how many messages did they each send?

Two students are discussing electricity that has a frequency of 60 hz. student a says that this type of electricity is referred to as ac. student b says that in this type of electricity, the electrons flow in only one direction. which of the following statements is correct? a. only student a is correct b. only student b is correct c. both of the two students are correct d. neither of the two students is correct