Water is pumped out of a holding tank at a rate of
liters per minute, where t is in minutes since the pump started.
1. how much water was pumped out of the tank, 30 minutes after the pump started?
a. 105.2
b. 80.4
c. 92.6
d. 112.8
2. if the holding tank contains 1000 liters of water when the pump is started, then how much water is in the tank 1 hour (60 minutes) after the pump has started?
a. 800
b. 840
c. 760
d. 700

Using the given statements, state whether the conditional statement is true or false. p: 2 + 2 = 4 q: 7 + 1 = 7 is p q true or false?

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."

The area (a) of a circle with a radius of r is given by the formula and its diameter (d) is given by d=2r. arrange the equations in the correct sequence to rewrite the formula for diameter in terms of the area of the circle.