19 people getting off the train can be represented by -19, and 17 people getting on the train as +17. -19 + 17 = 2, meaning that there was a net loss of two people. if there are 63 people on the train now, that means there were 65 to begin with.

Identify the converse of the following conditional: if a point is in the first quadrant, then its coordinates are positive. if the coordinates of a point are not positive, then the point is not in the first quadrant. if the coordinates of a point are positive, then the point is in the first quadrant. if a point is in the first quadrant, then its coordinates are positive. if a point is not in the first quadrant, then the coordinates of the point are not positive.

Order the measurements from the least to the greatest. 2,720 ml , 24.91 l , 0.0268 kl

Tom can paint the fence in 12 hours, but if he works together with a friend they can finish the job in 8 hours. how long would it take for his friend to paint this fence alone?