Aboat a moving with speed 8kmh leaves point p whose position vector is r1=4i+3j heading directly towards point q whose position vector is r2=2i+5j. at the same time another boat b leaves point 0i+0j. if the velocity of boat b is vector vba=root2(-5i+3j), find a. the veloctiy of boat b b. the timetaken when the boats are close c. the shortest distance apart

The verbal translation for the difference of m and 7 increased by 15

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."

16 more than the product of 5 and p