75. As she is going up, 15 stairs have been passed by the escalator moving. When she goes down same thing
Answer:
8.9 cm
Step-by-step explanation:
We have

Answer:
eff
Step-by-step explanation:
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Answer: 1. True 2. True 3. False. Number 4 True
Step-by-step explanation: PLS GIVE ME BRAINIEST