Answer:
pi4
Step-by-step explanation: Formula is piD, diamter is 4, so pi4 which equals 12.56
First, multiply the first equation by 3 to get:

Then, add the two equations together to get

We can follow that x=2. Plugging in x=2, we get that y=-4.
Therefore, the solution of (2,-4)
48:42
16:14
56:49
I hope this helps.
Answer: (3x^7-5x^5+10x^3-4x^2+1)÷(x^2-18)= 5x^1÷-9