La multiplicacion entre racionales es conmutativa?​

Gregory draws a scale drawing of his room. the scale that he uses is 1 cm : 4 ft. on his drawing, the room is 3 centimeters long. which equation can be used to find the actual length of gregory's room?

These tables represent a quadratic function with a vertex at (0, -1). what is the average rate of change for the interval from x = 9 to x = 10?

If t17 = 3 (t5) in an arithmetic progression, find t1 in terms of d.