Given:
Original or base : 40
New amount : 72
We need to find the difference of the new amount and the original amount
72 - 40 = 32
We then divide the difference by the original amount
32/40 = 0.80
We multiply the quotient by 100%
0.80 x 100% = 80%
The percentage of change is 80%
Get unknowns on one side and know on other side.
Divide both sides by -2
X= -7
Answer:
x²+(y-5)²=49
Step-by-step explanation: