Assume that Michael's teacher has a rule that if a student talks out-of-turn three times in one day, that student must stay in for recess for the rest of the week. Which of the following methods is she using to control student behavior?

a. folkway
b. sociobiology
c. informal sanction
d. formal sanction

The boat's velocity relative to the riverbank can be resolved into two components. the component going north is 2.7 m/s and the component going west is 1.2 m/s.we add these two vectors and then find the magnitude of the resultant to get the speed.the magnitude of the resultant vector from adding can be obtained by the pythagorean theorem.    to two significant figures, the boat's speed relative to the riverbank is 3.0 m/s.

Chope i i hope i did