Change the following distribution into 'less than' type distribution and draw its ogive.
Hence find its median and also verify it.
MARKS NUMBER OF STUDENTS
20-30 4
30-40 10
40-50 12
50-60 14
60-70 8
70-80 3
80-90 4
90-100 5

If 3 3/4 lb. of candy costs 20.25 how much would 1lb. of candy cost

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

At store a, erasers are sold individually. the cost y of x erasers is represented by the equation y=0.75x. the costs of erasers at store b are shown in the graph.