Answer:
All real numbers except x=1.
The general form of the equation of a circle is,
x² + y² + Dx + Ey + F = 0, where D, E, F are constants.
The given equation is 7x² + 7y² − 28x + 42y − 35 = 0. So, to convert this equation into a general form we just need to get rid of the leading coefficient 7.
Hence, divide both sides of the equation by 7. So,

x² + y² − 4x + 6y − 5=0.
So, the general form of the equation is x² + y² − 4x + 6y − 5=0.
A 4 years because it is half the number he wants it to double in
8:24
4:12
100:300
All you have to do is multiply both sides by the same number to get an equivalent ratio.
Answer:
should be 40, because the top line is 40 and the line on the side is the same length
Step-by-step explanation: