Answer:
14x+30y-20
Step-by-step explanation:
14(x+y)=14x+14y
14y+y=15y+15y=30y
and there is no like terms for -20 and 14x so the answer is
14x+30y-20
Answer:

Step-by-step explanation:
We need to write
as a single logarithm.
We know that

Therefore we have:

→ 
→ 
The solution is: 
Answer:
3x²+-1/3y²
Step-by-step explanation:
3x² -1/3y²=3x²+-1/3y²
The initial amount of water was 2.5 million liters
Then 2 million liters remained after evaporation, therefore 0.5 liters evaporated from the swimming pool.
Thus, the percentage will be given by: 0.5/2.5 × 100 = 20%
Hence the answer is 20%