Answer:
option A
Step-by-step explanation:
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Answer:
3.90 I think.
Step-by-step explanation:
first, 15×36. then subtract 50 three times.
Answer:
72
Step-by-step explanation:
Answer:
4:6 or 2:3
Step-by-step explanation:
Since the ratio of mass of oxygen to carbon is 4:3, when there are two carbons the ratio will be 4:3*2=4:6=2:3. Hope this helps!