<span>there was a 10% decrease</span>
It is.........................................................
Answer:
-8/7
Step-by-step explanation:
13-7. 8
--------- = --
7
7
Hello again lol. I would think it would be two rooms don’t count me on this one but I think it is two
Answer: 285.2 kg
Step-by-step explanation:
Given
The volume of helium in the balloon is 
The density of the helium is 
Mass of the helium gas is given by the product of density and volume

Thus, the mass of gas is 285.2 kg