I think the answer is x^2+6
It would take 3/4 of an hour, because it took 1/4 to paint 1/3.
-1.5
Step-by-step explanation:
So, you do 7.25 - 1 (because it is) and you get 6.25. Make it a fraction inton 25/4 and divide bu 75/8 (9 3/8 simplified) and you get -1.5 voila.
Circle equation:
(x-a)^2 + (y-b)^2 = r^2
x^2 - 2ax + a^2 + y^2 - 2by + b^2 = r^2
x^2 + y^2 + a^2 + b^2 - 2ax - 2by - r^2 = 0
_______________________
4x^2 + 4y^2 + 36y + 5 = 0
4x^2 + 4y^2 + 36y + 5 +0x + 0y = 0
(-2ax = 0x)
-2a = 0
a = 0
(-2by = 0y)
-2b = 0
b = 0
____________________
And now:
a^2 + b^2 - r^2 = 5
0^2 + 0^2 - r^2 = 5
0+0-r^2 = 5
r^2 = -5
Since there is no negative radius, we say that it is not an equation of a circle