Respuesta :
Answer:
900m
Step-by-step explanation:
All you have to do is find the difference between the two measurements
500 - (-400)
Then, two negatives create a positive:
500 + 400
= 900
Answer:
900 m
Step-by-step explanation:
500m is above zero
-400 m is below zero
500 steps to 0 and then 400 steps to -400
500+400 = 900
500 - (-400) = 900 m