How many miles does 31’680 feet have

Find all the values of x that make 0.1x + 0.25(102 - x) < 17.10 true.

You’re repairing a large rectangular aquarium. the final step is to cover the glass with a protective film. the front and back of the aquarium measure 4 meters by 2 meters, and the sides of the aquarium measure 3 meters by 2 meters. how many square meters of protective film do you need? ( )

In a school 2/3 of the students study a language of those who study a language 2/5 study french