Step-by-step explanation:
so he already down 20 ft so he ascends (goes up) 9 feet, so hes at 11 feet right now. then he descends 12 (goes down) feet so hes at 23 feet. lastly he ascends 15 feet (goes up) more. so the answer is 8
M=30/22,5=1,33
m=25/x=1,33. ...>x=25/1,33=18,7
Answer:
добре звучи добре
Step-by-step explanation: