Answer:
The center is (5, -4)
Radius 9
Step-by-step explanation:

Center is just the opposite in the formula
Answer:
816.514 greater than 86.684
Step-by-step explanation:
X is minus 30 over 7
So you can cross multiply and multiply the values.
Then you can solve it like a normal equation
Answer: (-1/6)/(3/7)= - 7/18
Solution:
(-1/6)/(3/7)=-(1/6)(7/3)=-[(1)(7)]/[(6)(3)]=-7/18