An aluminum block has a mass of 82.0 g and a volume of 12.8 cm^3. what is the block's density to the nearest g/cm^3?

a) 5.2 g/cm^3
b) 5.9 g/cm^3
c) 6.4 g/cm^3
d) 7.0 g/cm^3

Determine whether the set of whole numbers is closed under addition. explain why the set is or is not closed. give an example.

What is the perimeter of trapezoid jklm? + units 2 + + units 9 + units 9 + + units

Marlow is comparing the prices of two trucks rental compaines company a charges $3 per hour and an addtional $75 as serivce charges company b charges $2 per hour and an additional $85 as serivce charges