If p= 7cm and q= 5cm both to the nearest cm, find: a)largest possible value for p+q
b)the smallest possible value for p+q
c)largest possible value for p-q

7. the area of the playing surface at the olympic stadium in beijing isof a hectare. what area will it occupy on a plan drawn to a scaleof 1: 500?

Sanya noticed that the temperature was falling at a steady rate of 1.4 degrees every hour from the time that she first checked her outdoor thermometer. by 6 a. m., the temperature had fallen 21 degrees. which expression can you use to find how many hours earlier she had first checked the thermometer?

Calculate the missing value. round the answer to on decimal place. start with 70, increase it by 21%, and end up with