Which number has the same value as 20 tens

Adolphin is swimming with her friend. the dolphin jumps to a height of 4.54.54, point, 5 meters above the surface of the water as her friend swims 9.89.89, point, 8 meters directly below her. what is the position of the dolphin's friend relative to the surface of the water? meters

Use the coordinates of the labeled point to find a point-slope equation of the line (3 -5)

What dividend is represented by the synthetic below.?