Which operations are the most efficient to use to solve this problem? fifty-three donkeys each hauled 62 pounds of grain from the mountain to the valley. all of the grain was loaded equally into 31 container trucks. how many pounds of grain were in each container truck? choose all answers that are correct.

a. division
b. multiplication
c. addition
d. subtraction

Name the most appropriate metric unit for each measurement like the mass of cow

The parabola x= √y-9 opens: a.)up b.)down c.)right d.)left

Asays "we are both knaves" and b says nothing. exercises 24–31 relate to inhabitants of an island on which there are three kinds of people: knights who always tell the truth, knaves who always lie, and spies (called normals by smullyan [sm78]) who can either lie or tell the truth. you encounter three people, a, b, and c. you know one of these people is a knight, one is a knave, and one is a spy. each of the three people knows the type of person each of other two is. for each of these situations, if possible, determine whether there is a unique solution and determine who the knave, knight, and spy are. when there is no unique solution, list all possible solutions or state that there are no solutions. 24. a says "c is the knave," b says, "a is the knight," and c says "i am the spy."