Step-by-step explanation:

50 meters cubed because you have to multiple (2()5)(10)
Answer:
if their asking for % then this is the answers
1. 41% of 900 is 369
2. 24%
3. 46%
4. 23%
5. 95%
6. 23%
7. 75%
8. 22%
9. 92%
10. 45%
That's not correct. The terms 2a and 3b are not like terms, so we cannot combine them to get 5ab. We simply leave it as 2a+3b.
If you had 2a+3a, then it would simplify to 5a
Similarly, 2b+3b = 5b
Or you could have 2ab+3ab = 5ab
The key is that the variable portions must match up to be able to add them.