Which of the following sets is closed under division?
a. natural numbers
b. non zero intergers
c. irrational numbers
d. non zero rational numbers

Select the correct answer. what is the surface area of the victory podium shown here? include all surfaces of the podium, including the bottom. a. 61.5 square feet b. 61.75 square feet c. 65.25 square feet d. 69 square feet

You paid 28.00 for 8 gallons of gasoline. how much would you pay for 15 gallons of gasoline?

Awater holding tank measures 105 m long, 50 m wide, and 8 m deep. traces of mercury have been found in the tank, with a concen- tration of 60 mg/l. what is the total mass of mercury in the tank? answer in units of kg.