Which expressions result in a product that has a best estimate of 80? select all that apply. a. 0.82 x 112 b. 42.3 x 21 c. 1.2 x 78 d. 0.19 x 37 e. 8 x 9.62

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

Solve this system of equations. 12x − 18y = 27 4x − 6y = 10

The map shows the location of the airport and a warehouse in a city. though not displayed on the map, there is also a factory 112 miles due north of the warehouse.a truck traveled from the warehouse to the airport and then to the factory. what is the total number of miles the truck traveled?