If the weight of 12 sheets of thick paper is 40 gm, how many sheets
of the same paper would weigh 2 ½ kg?

Can someone pls ! pls answer all. no explanation needed..

The height of a flare fired from the deck of a ship in distress can be modeled by h(t)= -2(8t^2-52t-28), where h is the height of the flare above water and t is the time in seconds. a. find the time it takes the flare to hit the water.

Shannon drove for 540 minutes. if she traveled 65 miles per hour,how many total miles did she travel?