If (x > 40 and < 50): The code above should be rewritten as:
if (50 >xor x > 40):
if (50 > x and > 40):
The code is fine
O if (x > 40 and x < 50):

Zamir and talia raced through a maze. zamir walked 2 m north, 2 m east, 4 m south, 2 m east, 4 m north, 2 m east, 3 m south, 4 m east and 4 m north. talia walked 2 m north, 6 m east, 3 m south, 4 m east, and 4 m north. compare their displacements:

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Awalk up the phase change graph worksheet