Three students weigh a 10.2mg copper sample in a Chemistry lab. Which student was the most accurate? (all in mg)
Brad: 10.1
Brandon: 10.23
Meagan: 10

The conversion factor relating feet to meters is 1 ft=0.305 m. keep in mind that when using conversion factors, you want to make sure that like units cancel leaving you with the units you need. you have been told that a certain house is 164 m2 in area. how much is this in square feet?

Mary used 1/7 of a spool of ribbon to complete 4 projects. she used the same amount of ribbon on each project. how much ribbon did she use on each project?

The ratio of men to women working for a company is 4 to 5 . if there are 90 women working for the company, what is the total number of employees?