Answer: 1
Step-by-step explanation:

<span>the answer is subtraction</span>
Answer:
y=88
x=92
Step-by-step explanation:
i know that a triangle angles always add up to 180 so for x 39+49=88 and 180-88=92 so x is 92
to find y you would add the opposite interior angles which are 39 and 49 so the exterior angle is 88
y=88
x=92
If you do 7-5 then you get 2. You can check by adding 2+5 to get 7. You do this because this is how you check your work .
It would be liters because the fountains could contain a lot of water