Answer:
the answer is 7/12 hours
Step-by-step explanation:
Answer:
21+10.5 which would equal 31.5
Step-by-step explanation:
Explain why dosea mountain climber needs an oxygen supply at very high altitude even through the air still contains 21% oxygen
180-34=146
146-5=141
ratio=1:4
1+4=5
141÷5=28.2
x=28.2
y=112.8
I may be wrong, ask for more opinions
-
--- O
-
I think B not 100%shure ,you could prob go ask this on yahoo and get a bit more help ;) sorry I couldent help more