Answer:
The value of
:

Step-by-step explanation:
Find the value of
:

-Add both sides by
:


-Subtract both sides by
:


Divide both sides by
:


So, the final answer would be
.
Answer:
Solving the system of equations:
x: 1
y: 2
Step-by-step explanation:
Plug it in to see if it is right, to make sure of course. Better to be safe than sorry.
Answer:
(A)
Step-by-step explanation:
The standard form of the equation of a circle is given as:

Simplifying the above given equation, we get




which is the required general form of the equation.
Hence, option A is correct.
The percentage change is 20